We can connect (and use) external NFC readers to our phones through USB OTG - NFC Hacking

You can find pictures and a description of my set up here:
http://www.nfcbrief.com/2012/07/acr122-and-galaxy-nexus-connected-via.html
Basically, ACS released an application called Smart Biz Card that allows you to read and write contact NFC tags with the popular ACR122 connected via USB host. The application is only for tablets, so it will look strange on phone screens, but this can be fixed by entering tablet mode.
I'm sure many of you viewing this sub-forum also have a ACR122, so maybe this application will provide some clues as to unlocking more advanced features through external readers?

NFC Guy said:
You can find pictures and a description of my set up here:
http://www.nfcbrief.com/2012/07/acr122-and-galaxy-nexus-connected-via.html
Basically, ACS released an application called Smart Biz Card that allows you to read and write contact NFC tags with the popular ACR122 connected via USB host. The application is only for tablets, so it will look strange on phone screens, but this can be fixed by entering tablet mode.
I'm sure many of you viewing this sub-forum also have a ACR122, so maybe this application will provide some clues as to unlocking more advanced features through external readers?
Click to expand...
Click to collapse
hi good job but i don't see the point ?? Nexus for example already have NFC so why connect ACR 122 ??

Bardamuz said:
hi good job but i don't see the point ?? Nexus for example already have NFC so why connect ACR 122 ??
Click to expand...
Click to collapse
My thinking was that this sort of thing would be ideal for NFC hacking. The documentation for the ACR122 states that it can do card emulation (but everyone seems to be having trouble with it). If we could somehow get the drivers for the ACR122 working fully with Android, it would provide a good alternative to trying to access our phones' secure elements for card emulation.
This could also have some more practical uses, e.g. for event ticketing on a small scale?

NFC Guy said:
My thinking was that this sort of thing would be ideal for NFC hacking. The documentation for the ACR122 states that it can do card emulation (but everyone seems to be having trouble with it). If we could somehow get the drivers for the ACR122 working fully with Android, it would provide a good alternative to trying to access our phones' secure elements for card emulation.
This could also have some more practical uses, e.g. for event ticketing on a small scale?
Click to expand...
Click to collapse
i some point i agree with you, but i think will be (maybe) simpler to use the ACR122 in pc (mac/winbooze) and transfer it in some Android apps
but at least you are right card emulation it's a problem currently

ACS USB NFC reader
Hi
Have you actually had this working on a tablet? I have tried with a Samsung Galaxy tab 10.1 (2) and the reader is not recognised. Some other readers which have chipsets Samsung support are recognised and show up as an HID. But the ACR122U doesnt appear.
Ted
Basically, ACS released an application called Smart Biz Card that allows you to read and write contact NFC tags with the popular ACR122 connected via USB host. The application is only for tablets, so it will look strange on phone screens, but this can be fixed by entering tablet mode.
I'm sure many of you viewing this sub-forum also have a ACR122, so maybe this application will provide some clues as to unlocking more advanced features through external readers?[/QUOTE]

tedhurlock said:
Have you actually had this working on a tablet? I have tried with a Samsung Galaxy tab 10.1 (2) and the reader is not recognised. Some other readers which have chipsets Samsung support are recognised and show up as an HID. But the ACR122U doesnt appear.
Click to expand...
Click to collapse
I would guess they are missing the mandatory drivers to use them. Btw, are you sure they are recognized as HID? They actually should be recognized as CCID, if I remember correctly. Can you confirm they actually work?

ACR122 on Galaxy
I have no idea where I would get drivers. ACD who produce the device have only given a lava library for access which seems to use direct USB calls. And it seems to have been broken with ICS.
Tjis Android world looks quite muddy from my first experiences
Damastus said:
I would guess they are missing the mandatory drivers to use them. Btw, are you sure they are recognized as HID? They actually should be recognized as CCID, if I remember correctly. Can you confirm they actually work?
Click to expand...
Click to collapse

Related

USB adapter connecting to digital cameras?

Wondering for those who have received theirs if they can confirm whether or not the USB adapter successfully allows connection from the 10.1 to a digital camera (for uploading photos).
And by the way mods, this is a specific accessory related question, not a general question, so please do not move.
joeski27 said:
Wondering for those who have received theirs if they can confirm whether or not the USB adapter successfully allows connection from the 10.1 to a digital camera (for uploading photos).
And by the way mods, this is a specific accessory related question, not a general question, so please do not move.
Click to expand...
Click to collapse
Should work if the camera supports mass storage. I never use the USB cable from my Pentax K-5 so I can't tell you for sure.
Going to try a card reader tomorrow.
I am having trouble using a Canon DSLR. The camera says that it is busy (indicating that it is connected), but my GT shows no files in the usbStorage folder. USB Drives work well. I have a CF Reader that I could use if needed. The direct connection would be more convenient though.
dwa012 said:
I am having trouble using a Canon DSLR. The camera says that it is busy (indicating that it is connected), but my GT shows no files in the usbStorage folder. USB Drives work well. I have a CF Reader that I could use if needed. The direct connection would be more convenient though.
Click to expand...
Click to collapse
Which Canon? I know the 7D does NOT support USB mass storage, it supports some other less-standard protocol. (Might be MTP but not sure). I know that whatever the 7D supports, it won't allow you to download RAW files without a card reader. (At least this was the case on a WinXP machine that I didn't have Administrator rights on.) Epically stupid design IMO, my experiences with a 7D at work have me pretty disappointed with it compared to my Pentaxes.
Since you mention CF I'm guessing it's a 7D.
I am using a 30D. It seems that that model does NOT support USB mass storage mode either.
I have to look for my reader to see it will work.
I guess we will have to wait for a kernel module to implement the communication protocol.
Unfortunately it's hard to find much information at all about Linux support for whatever protocol the Canons use - nearly everyone just uses card readers.
I am running Ubuntu 11.04 on my laptop and it will connect to the camera and browse the contents.
I am not sure if that helps any. I am not sure how much work it would be to port those libraries over. I am not even sure what package it is using to create the connection. I can do some more examining to figure out what the module it is using.
EDIT:
It looks like I am using the libgphoto2-2 library to communicate with the camera. It has a few dependencies that may not be possible to port.
http://packages.ubuntu.com/natty/libgphoto2-2

The state of MTP on Mac OS X (as required for ICS/GNex)

So, this isn't about the Galaxy Nexus per-se, but I know many of you are scared of the change to MTP and the interaction with the computer, especially those of you coming from Gingerbread directly through to the Galaxy Nexus.
I've had a Motorola Xoom (which doesn't support USB mass storage mode) for a while. Simply put, there is _no_ native support for MTP in OS X (10.7 or lower). If you plug your Galaxy Nexus into your Mac, nothing will happen at all. OS X won't see it, DoubleTwist doesn't see it, Songbird won't and iTunes (obviously) won't see it. As far as I know, there's no way of enabling your Mac to see the device natively, and all of the software designed for other MTP devices that I've tried doesn't work.
In fact, the only way your Mac will ever see it is if you download Google's Android File Helper software. This program, once installed, runs in the background, and whenever you plug in your Honeycomb (or ICS) device, it pops up a window showing the contents of the phone's memory. From here (and only from that window), you can pull files from the phone/tablet or put them onto it.
This works acceptably, but with a few hangups. First, unlike a normal finder window, only one transfer can occur at once, and there's no queueing. So, if you drop one folder on to copy, you're not able to move anything else onto or off of the card until it's finished. Also, large transfers (~10 GB) don't work particularly reliably, and may fail partway through, so you may consider dragging files in in groups. Finally, and most frustratingly, it will often not be up to date with what files are on the device, especially if you've recently deleted them. So, folders or files may still show up that you've recently deleted. Maybe this has been changed in ICS (I hope so!), but that's my experience.
That's your primary way on or off the device. I've had limited success using DDMS for transferring files on and off of the device, and although it's clunky and requires USB debugging mode, it's the most reliable way I've found for transfers that fail in the Transfer client. In practice, I'd recommend using something like SwiFTP to copy (smaller) files to and from your device, and avoiding the hassle when you can.
In short, you definitely CAN use OS X to transfer files onto and off of your Galaxy Nexus, but it's not as easy as it was for Gingerbread Devices, and tools like DoubleTwist and Songbird can no longer access your device at all (in their current versions). You can get around this using AirSync for DoubleTwist to load music, or doing so manually, but it's kludgey. It's unlikely that Apple will choose to support MTP in future versions of OS X (it's a Microsoft protocol now used mostly by Android), but hopefully Google will improve the tool as time goes on.
Sorry if this is all well known and obvious, but if you were on the fence about the GNex because of this, don't be. The MTP switch is annoying, but nothing showstopping, even for OS X. Just FYI.
wanderfowl said:
I've had a Motorola Xoom (which doesn't support USB host mode) for a while.
Click to expand...
Click to collapse
Which doesn't have USB Mass Storage mode (not USB Host - this is USB OTG where you can plug in other USB peripherals into the Xoom). Sorry just a pet peeve watching people confuse the two.
Thanks for an informative post. MTP looks like it is going to cause headaches to every non-Windows device by the looks of it. Ironic for a Linux based device ; ).
Jebus99 said:
Which doesn't have USB Mass Storage mode (not USB Host - this is USB OTG where you can plug in other USB peripherals into the Xoom). Sorry just a pet peeve watching people confuse the two.
Thanks for an informative post. MTP looks like it is going to cause headaches to every non-Windows device by the looks of it. Ironic for a Linux based device ; ).
Click to expand...
Click to collapse
Whoops! Edited
So WiFi File Explorer outta work though if your other ftp type app did?
Thanks for the info. I remember using the app on my MacBook when I had the Xoom. I didn't mind it too much, but it was a tad annoying having to open the app rather than just pop open 'finder' and go. FWIW it DID work just fine for my couple months with the Xoom.
So WiFi File Explorer outta work though if your other ftp type app did?
Click to expand...
Click to collapse
Yeah, FTP apps of all sorts work fine. I use Transmit on the Mac to access the phone via FTP, and that works like a charm.
martonikaj said:
Thanks for the info. I remember using the app on my MacBook when I had the Xoom. I didn't mind it too much, but it was a tad annoying having to open the app rather than just pop open 'finder' and go. FWIW it DID work just fine for my couple months with the Xoom.
Click to expand...
Click to collapse
It works fine to the internal storage. Maybe I should've said explicitly that I had more issues using the Android File Transfer app with the SD Card in the Xoom.
I'm glad Google gave this a thought, now they should make one for linux too, but they probably won't.
wanderfowl said:
iTunes (obviously) won't see it.
Click to expand...
Click to collapse
My post is pointless, but hell will freeze over before iTunes recognizes a Samsung device, lol. If it wasn't for laws and standard, they wouldn't allow their PC to recognize Samsung devices either.
eksasol said:
I'm glad Google gave this a thought, now they should make one for linux too, but they probably won't.
Click to expand...
Click to collapse
That's the nice part about Linux. The people working on Linux have an active incentive to add this functionality, as it improves the experience. With OS X, they have an active (marketing) reason to not add it, anti-competitive behavior. Don't give up hope
wanderfowl said:
It's unlikely that Apple will choose to support MTP in future versions of OS X (it's a Microsoft protocol now used mostly by Android), but hopefully Google will improve the tool as time goes on.
Click to expand...
Click to collapse
It's a protocol native to the USB standard since 2008 so if Apple want to be standards compliant they should implement it. There are lots of other devices that use it as well.
wanderfowl said:
As far as I know, there's no way of enabling your Mac to see the device natively, and all of the software designed for other MTP devices that I've tried doesn't work.
Click to expand...
Click to collapse
Those apps probably just need an update to libmtp.. for some reason that library has the device ID of every device it supports hardcoded in, rather than working out whether a device supports mtp in other ways as things like windows do.
If anyone has ported mtpfs to OSX you should be able to get that going (will probably do that myself when I get time.. Android File Transfer is OK but a bit quirky).
blunden said:
It's a protocol native to the USB standard since 2008 so if Apple want to be standards compliant they should implement it. There are lots of other devices that use it as well.
Click to expand...
Click to collapse
Trust me, I'm not defending it, but I can't imagine Apple in its current state implementing a change which would help in supporting a competitor's product (especially Android) just to be open and compliant. Given how willing Apple as a company is to cut off its nose to spite its face, I doubt that they'll rush to help their users here. Prove me wrong, Apple.
TonyHoyle said:
Those apps probably just need an update to libmtp.. for some reason that library has the device ID of every device it supports hardcoded in, rather than working out whether a device supports mtp in other ways as things like windows do.
If anyone has ported mtpfs to OSX you should be able to get that going (will probably do that myself when I get time.. Android File Transfer is OK but a bit quirky).
Click to expand...
Click to collapse
I've tried working with the existing mtpfs ports, but wasn't able to get very far at all. I'm hoping that ICS will spur people to develop further on that, maybe pulling it into MacFUSE.
wanderfowl said:
Trust me, I'm not defending it, but I can't imagine Apple in its current state implementing a change which would help in supporting a competitor's product (especially Android) just to be open and compliant. Given how willing Apple as a company is to cut off its nose to spite its face, I doubt that they'll rush to help their users here. Prove me wrong, Apple.
Click to expand...
Click to collapse
You certainly have a point and is the primary reason I dispise Apple as a company.
My main point was that it's not to be considered a "Microsoft protocol" as it's been part of the USB standard for years now. Nothing is stopping any OS from implementing it and as a standard they really should as it brings some nice improvements like not requiring the OS on the PC to have support for the filesystem used on the device. Considering FAT32 and exFAT are basically the only filesystems that work in all major OSes, the former being old and having severe limitations and the latter requiring a license it's nice to be able to use something like ext2/3/4 or any other filesystem of choice and still maintain compability.
Apple hasn't typically been particularly resistant to implementing standards and protocols used to communicate with 3rd party devices. Also, the major force behind Apple's resistance to just about everything is gone now... We'll see if they continue the trend without him.
Just bumping this again for the new crop of ICS users
So I've just gotten my VZW Gnex, and unfortunately, Android file transfer seems to have the same problems with not refreshing the files in the folder as it did on the Xoom.
That said, if you're trying to get into a given folder and your Android File Transfer can't see the contents (or the folder itself), just reboot the phone and when it comes back up, the new folder should be there and right as rain.
wanderfowl said:
OS X won't see it, DoubleTwist doesn't see it, Songbird won't and iTunes (obviously) won't see it.
Click to expand...
Click to collapse
If syncing with iTunes is your goal, you left out iSyncr. Our app can sync Android 3.0 and 4.0 devices with iTunes on a Mac over USB (and WiFi). If your Android device is supported by Android File Transfer, it is supported by iSyncr.
As always, you can shoot me an email if you are having an issue with this.
-Justin
I seem to be having a new issue. All of a sudden, I can't sync anything to my XOOM. I had to unlock, and re-unroot it to install ICS on it. I don't know why, but everytime I begin a transfer to my XOOM Android File Transfer instantly says that my my device is locked and I need unlock the screen and/or it can't access the media storage device. It's really frustrating. I can't push the SU.zip bc it gets lost in between the "Ext SD Card" and the "Internal SD Card." Long story short... my Xoom boots into ICS and runs perfectly fine, but I can't finish the root process. Any help?!
Android File Transfer supports files up to 4gb in size. This may be why you are having trouble transferring files that are 10 gb. At least this is the case in OS X Lion
Sent from my Galaxy Nexus using xda premium

GN Mass Stroage / MTP

I have been very excited about the GN since it was announced. I love the big screen and the fact that it is a pure Android phone.
There has been a lot of talk about the lack of Mass Storage on the GN, but I am not sure I care. I don't really understand what happens with MTP. So I have some questions that perhaps those familiar can fill me in on.
When you plug the phone into a Windows PC, what happens?
-Can I still drag music over to the phone or do I have to use some kind of a wizard?
-I will ONLY be able to copy over music, videos and pictures correct? I can't copy other data over, for example a ROM via USB right?
- I can still copy things like ROMs over using a file manager and WiFi correct?
Thanks!
TheTinRam said:
I have been very excited about the GN since it was announced. I love the big screen and the fact that it is a pure Android phone.
There has been a lot of talk about the lack of Mass Storage on the GN, but I am not sure I care. I don't really understand what happens with MTP. So I have some questions that perhaps those familiar can fill me in on.
When you plug the phone into a Windows PC, what happens?
-Can I still drag music over to the phone or do I have to use some kind of a wizard?
-I will ONLY be able to copy over music, videos and pictures correct? I can't copy other data over, for example a ROM via USB right?
- I can still copy things like ROMs over using a file manager and WiFi correct?
Thanks!
Click to expand...
Click to collapse
Provided that the Windows PC is Windows XP + WMP10 or above, it'll function very similarily to a normal drive, except you will just see it as "Galaxy Nexus" instead of being represented with a drive letter.
You can copy anything you desire, only PTP has a restriction of accessing the camera/picture folders.
It is said that transferring larger files or a bigger queue of files may lead to freezing or cancelled transfers, but i've personally not experienced that yet(On my Eee Pad Transformer)
FISKER_Q said:
Provided that the Windows PC is Windows XP + WMP10 or above, it'll function very similarily to a normal drive, except you will just see it as "Galaxy Nexus" instead of being represented with a drive letter.
Click to expand...
Click to collapse
Thanks! So if that is the case, why all the talk that people are disappointed that Mass Storage support is not there? If it still appears and you can still copy files over, what is the problem? Do people really want a drive letter that badly? For what? Scripting of some soft?
How does this affect mounting the phone under Linux?
With my current phone, I plug it in and since it is a mass storage device Fedora simply assigns it as a hard drive /dev/sdb for example. I can then just mount the SD card inside the phone.
Is this going to cause a major headache for me? I'm switching to a Linux phone to get away from all this Windows crap!
HooloovooUK said:
I'm switching to a Linux phone to get away from all this Windows crap!
Click to expand...
Click to collapse
You are going to have to deal with all the Linux crap, including the additional software you will need to make MTP work for you.
TheTinRam said:
Thanks! So if that is the case, why all the talk that people are disappointed that Mass Storage support is not there? If it still appears and you can still copy files over, what is the problem? Do people really want a drive letter that badly? For what? Scripting of some soft?
Click to expand...
Click to collapse
Actually MTP is not without it's drawbacks, due to the "lack of a drive letter", or rather it being considered a physical drive, it also means that interoperability will be harder to achieve.
This would especially be true for devices like car radios with USB support, traditionally you would be able to simply connect your phone and let it serve as a USB thumb drive, the car radio could then play music from the phone, but that won't be possible due to MTP, further more since the phone is not a drive, a program that for example does not use the windows explorer as a way to copy those files would have no concept of the drive, for example, a command prompt wouldn't be able to access the drive as it has no drive mapping.
There are other pros and cons, but i think this is the one people are the most concerned about.
HooloovooUK said:
How does this affect mounting the phone under Linux?
With my current phone, I plug it in and since it is a mass storage device Fedora simply assigns it as a hard drive /dev/sdb for example. I can then just mount the SD card inside the phone.
Is this going to cause a major headache for me? I'm switching to a Linux phone to get away from all this Windows crap!
Click to expand...
Click to collapse
Google has official support for MTP on Mac, as for Linux the community already has support for it as well, i don't use either system so i can't go into more detail, i just know that the support is there
TheTinRam said:
You are going to have to deal with all the Linux crap, including the additional software you will need to make MTP work for you.
Click to expand...
Click to collapse
Great. Well I'm sure there will be a mod somewhere that enables mass storage.
HooloovooUK said:
Great. Well I'm sure there will be a mod somewhere that enables mass storage.
Click to expand...
Click to collapse
If you're referring to a mod that enables USB Mass Storage mode on the Galaxy Nexus, there likely won't be since the storage on the Galaxy Nexus is partitioned in a completely different manner to how has been done previously on Android phones.
oscillik said:
If you're referring to a mod that enables USB Mass Storage mode on the Galaxy Nexus, there likely won't be since the storage on the Galaxy Nexus is partitioned in a completely different manner to how has been done previously on Android phones.
Click to expand...
Click to collapse
Well I guess I'll just plug it in and see what it makes of the device.
oscillik said:
If you're referring to a mod that enables USB Mass Storage mode on the Galaxy Nexus, there likely won't be since the storage on the Galaxy Nexus is partitioned in a completely different manner to how has been done previously on Android phones.
Click to expand...
Click to collapse
I'm wondering what would happen if one put an extra partition on the phone...
not going to be the first (or even 10th) to try it though!
Clancy_s said:
I'm wondering what would happen if one put an extra partition on the phone...
not going to be the first (or even 10th) to try it though!
Click to expand...
Click to collapse
Considering how Dan Morrill explains why the Galaxy Nexus has no USB Mass Storage support I certainly wouldn't want to try it
edit: to clarify, it probably is possible to do it on a modded ROM, I'm just saying that I wouldn't want to monkey around with that personally.
Clancy_s said:
I'm wondering what would happen if one put an extra partition on the phone...
not going to be the first (or even 10th) to try it though!
Click to expand...
Click to collapse
Using your own bootloader/recovery there's nothing preventing you from repartitioning the Galaxy Nexus the same way how Android systems used to be partitioned before Honeycomb, i.e. with a separate FAT32 internal partition for media storage. You just have to be aware of the tradeoffs: with a separate media partition, you have USB mass storage but you'll have to manage two separate partitions for apps and media with two separate space constraints. With a unified partition you just have one constraint, but you lose the USB mass storage capability.
oscillik said:
Considering how Dan Morrill explains why the Galaxy Nexus has no USB Mass Storage support I certainly wouldn't want to try it
Click to expand...
Click to collapse
Thanks for that link.
On Mac or Linux, MTP devices appear just as any another UMS device.
Click to expand...
Click to collapse
Sounds ok then.
seems time waits for no man..... done here :
http://forum.xda-developers.com/showthread.php?t=1359579
birdster said:
seems time waits for no man..... done here :
http://forum.xda-developers.com/showthread.php?t=1359579
Click to expand...
Click to collapse
Indeed..
*this* is why I got a Nexus Something not right.. wait a couple of hours and there'll be a fix on XDA..
Sorry, but the Nexus is a pile if I can't use it as a DAP source for my car audio. Is there any possible way to enable USB mass storage? This device will have far too many compromises to be even usable if mass storage isn't present.
Sent from my DROIDX using Tapatalk
Which built-in or OEM car infotainment systems support MTP?
Supposedly Ford cars with SYNC 1.0/2.0 support MTP. Windows Embedded Automotive 7 supports MTP, which is used in the MY2012+ MyFord/MyLincoln Touch systems, Nissan Leaf, Fiat 500, and some Kia models (may go under the "Uvo" system name). Alpine may use WEA7 at some point, maybe in a built-in or OEM nav system that might have a USB port that would work with the Galaxy Nexus, but I haven't found any model numbers yet. There have also been rumors that some upcoming cars (Tesla Model S, maybe?) will use Android for their infotainment systems, but nothing specific, and that doesn't guarantee MTP support.
One article mentioned using Bluetooth instead, but I'm not sure how that would work with the car's built-in Bluetooth. Possibly means pairing with a portable Garmin/TomTom nav device that supports Bluetooth A2DP, though higher end portable nav devices have flash storage for music files and can play music directly.
There are also several aftermarket head units that support MTP. Alpine, Sony, and Kenwood have some, I believe, and there may be others.
EDIT: As far as built-in goes, I think BMW has supported MTP devices on their stock audio systems for at least 3-4 years. I haven't looked at Audi or some of the better Japanese/Korean makes/models, but wouldn't surprise me if some of them did as well.
This is not the same.
This is USB host functionality, where GN can access external usb disk attached to it.
What we are talking here is GN attached to something an recognized as usb disk.
birdster said:
seems time waits for no man..... done here :
http://forum.xda-developers.com/showthread.php?t=1359579
Click to expand...
Click to collapse
Well, doesn't clockworkmod recovery already allow you to repartition your storage the way you want?
And since the OS does actually support usb mass storage, it should be fairly easy to create a FAT32 partition for sd card usage. (Similar to Nexus S, which has no sd card slot but comes with 2 partitions: 1 GB internal storage apps, 15 GB for usb storage)

[Q] NFC for Access Control

Hello!
Currently I am writing my Master's thesis. For this I am supposed to use the NFC function of the Samsung Galaxy Nexus to turn on/off certain devices such as a flat iron or a stove.
My idea was to use an RFID access control as the ones used to open laboratory doors or the like and attach its relais to the devices' power switch. One could hold the phone next to the device to turn it on/off if permission is granted.
However, most of the access controls I've found are only for 125kHz. As far as I know NFC uses the ISO/IEC 14443 standard which communicates with 13.56MHz. What confuses me though is that some sources say it works with the NXP Mifare Ultralight C chipset but not with the Mifare Classic 1K. Can anyone explain why that is? But even more important to me is: has anyone a good suggestion on the access control I should use in my case?
I'd be happy about any reply!
Regards,
-knucKles
knucKles2 said:
Hello!
Currently I am writing my Master's thesis. For this I am supposed to use the NFC function of the Samsung Galaxy Nexus to turn on/off certain devices such as a flat iron or a stove.
My idea was to use an RFID access control as the ones used to open laboratory doors or the like and attach its relais to the devices' power switch. One could hold the phone next to the device to turn it on/off if permission is granted.
However, most of the access controls I've found are only for 125kHz. As far as I know NFC uses the ISO/IEC 14443 standard which communicates with 13.56MHz. What confuses me though is that some sources say it works with the NXP Mifare Ultralight C chipset but not with the Mifare Classic 1K. Can anyone explain why that is? But even more important to me is: has anyone a good suggestion on the access control I should use in my case?
I'd be happy about any reply!
Regards,
-knucKles
Click to expand...
Click to collapse
Just an Idea and hear me out...
As far as I remember most access control (Which I used to use about 7 years ago when I was working for a plant as a part time IT) is nothing but the right string of 101011010, a few bits of data stored on a magnetic strip on a card, or the older NFC chips that could changed, but only store 1 "Tag" at a time.
With most NFC chips in our newer smart phones we have the control to change the information that is broadcast by our NFC on the fly, and even better it is a two way transmission (Which is what makes Google wallet possible.)
If you were going to attempt to make a stove or other device turn off and on with an NFC chip, you would be better off not looking for an access control solution. I would try using another computer. Something that can be programmed with an NFC chip to receive a certain bit of code that says "Turn on front right burner at 50%" and then reply with a conformation saying when the action is complete.
A small Linux box, with an NFC and a single program, and Knowledge of external interfacing.
A smart phone with preset tags that can be chosen to do different actions, and wait for a confirmation.
I think that would be something new and applicable to the real world.
Hope this give you some ideas
After I get done with my current project I am going to make an android app that lets you create an NFC tag and write it to any tag, so people can program there router, stick an NFC Sticker to the side of your router any anyone with an NFC chip will have instant access to there network by touching the router.
Switching on a device using NFC
I have a similar requirement; i.e. to activate a device using NFC from a phone or smart tag. My question is whether the induction power of the NFC from the phone is sufficient to turn on a device that is an off state prior to this.
ilsol said:
I have a similar requirement; i.e. to activate a device using NFC from a phone or smart tag. My question is whether the induction power of the NFC from the phone is sufficient to turn on a device that is an off state prior to this.
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Yes , but such tag isn’t available online, such tag can be only order from specialized manufacturer, we are making some stuff will turn on & off bluetooth device, and it work like a charm. Need soldering to bypass the existing on/off button.
hope that help
ilsol said:
I have a similar requirement; i.e. to activate a device using NFC from a phone or smart tag. My question is whether the induction power of the NFC from the phone is sufficient to turn on a device that is an off state prior to this.
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Click to collapse
Probably not, you will need something (small chip) that just listens for the right tag and handles it for you.
Thrown far across the web with the power of Hercules and Tapatalk 2
thankyou very jedan

[Q] Connect DSLR camera to Tab3 8.0

I have a Tab 3 (8.0) with android 4.2.2. Can I connect via OTG cable my Nikon D200 camera to the tablet so I can view a picture shortly after exposure. I tried just making the connection and the tablet does not "see" the camera's CF card as an additional storage or hard drive. By the way, this procedure does work on my computer using Windows Explorer. I read somewhere that android 4.3 update will allow this should it ever become available. Any ideas on how I might be able to accomplish this? Thank you all.
des2105 said:
I have a Tab 3 (8.0) with android 4.2.2. Can I connect via OTG cable my Nikon D200 camera to the tablet so I can view a picture shortly after exposure. I tried just making the connection and the tablet does not "see" the camera's CF card as an additional storage or hard drive. By the way, this procedure does work on my computer using Windows Explorer. I read somewhere that android 4.3 update will allow this should it ever become available. Any ideas on how I might be able to accomplish this? Thank you all.
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IF you can set your camera to a mode that it looks like a storage device for your computer, then it should work fine as a storage device ONLY with the tablet and OTG. IF it needs a special driver to work on the PC, then then Android will not recognize it.
Connect DSLR camera to Tab3 8.0
DigitalMD said:
IF you can set your camera to a mode that it looks like a storage device for your computer, then it should work fine as a storage device ONLY with the tablet and OTG. IF it needs a special driver to work on the PC, then then Android will not recognize it.
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Thank you, DigitalMD,
I will have to check into that. I know when I first connected the camera to the PC it did load a driver of some description but I don't know what. Until Samsung decides to grace us all with 4.3.2, perhaps I would be better off using my 7" net book instead of the tablet. Too bad but thank you again for your rapid and helpful response.
des2105 said:
Thank you, DigitalMD,
I will have to check into that. I know when I first connected the camera to the PC it did load a driver of some description but I don't know what. Until Samsung decides to grace us all with 4.3.2, perhaps I would be better off using my 7" net book instead of the tablet. Too bad but thank you again for your rapid and helpful response.
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Click to collapse
Are you trying to achieve control or just file transfer? If you are trying to control the camera during shooting or view when in shooting mode you will need an app for Nikon control. When you connect a new device to a windows PC, it will search an online database of drivers and download a new driver if needed. Android does not work like that, for OTG there is a very limited set of devices it can recognize mainly , storage, mouse, keyboard
You might try DSLR.Dashboard or similar apps.
https://play.google.com/store/apps/details?id=com.dslr.dashboard
https://code.google.com/p/dslrdashboard/

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