Is it possible to read an NFC tag, for example one that lets me enter a hotel room, and then reproduce the signal to be read by another NFC reader?
For example, I read an NFC tag that lets me into my hotel and store the data on the Android device. I then tap my device (not the card) against the NFC reader on the hotel room door and the device sends the data that was on the card, and the door opens.
If so, what program allows me to do this? I've tried downloading a few random ones but haven't found this functionality and am beginning to doubt it's possible.
No, the N7 can read and write tags but not emulate one. The best you could do might be to copy data from one tag to another and use that.
Or even better, I tap your access card against my tablet and store your hotel room access info and wait for you to go out and then enter your room.
I think you may struggle to find something openly available that would allow you to clone NFC tags so simply, though in theory it may be possible
Sent from my Nexus 7 using xda premium
Related
This is more of an FYI...
I found out today that my Nexus S can detect MyKi cards (Subway/train access cards in Melbourne Australia - http://www.myki.com.au ) when NFC is turned on. To test it out, just place the phone on top of your wallet with the MyKi card in it and you'll hear the detection sound.
Now the question is, when will I be able to use the phone instead of the access card?
It would be much easier just to open an app and touch the back of the phone to pass through the gates at the train station.
The future, just one step away
I use the same (stupid) smart-ticket system here in melbourne, waste of money the myki card is. anyways, to answer your question, the card is an nfc enabled device. and it has a chip inside which stores information (an unique code for the card). and the phone (NS) reads that info, and beeps indicating it recognises it. if there is an app utilises NFC, like NFC task launcher, it will automatically launch it and respond with appropriate actions. source? i have and use an myki myself
This thought just occured to me. If i go to a store or im in a cab and use the nfc, i know it will pick it up, but doesnt it need internet to communicate to google servers in order to do the transfer? its a wifi only device and yes i know you can tether, but just seems weird.
I don't have personal experience in this matter but I have read you only need wifi to setup the Wallet. Once the setup is complete, you can use it without wifi.
Unless I am mistaken it stores the information that would be normally stored on a physical card on your device so that it doesn't need a connection. When you go to make a purchase it then uses the nfc to transmit the data in someway, "swiping" the card.
But I'm not exactly sure. It makes the most sense to do it that way though.
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the few times i have used wallet on my phone it seems to go out on the network to update the balance. I assume it works like a credit card though and the machine you tap your phone to does the credit check to the account so i would guess is not necessary. I'd try it Monday but I'll probably forget. We have vending machines at work with paypass terminals.
Hello!
After confirming from google, the Wallet app doesn't need WiFi or any data connection to pay at a paypass location since all it does is send card info over NFC. However, it does need wifi to update your balance and transaction list.
Used it today at cvs, does not need wifi
Sent from my Nexus 7 using xda app-developers app
The building is my condo which I am referring to which currently has swipe access. All condo owners have the "tab" which we currently pass over the little box (please excuse my technical jargon ) to open the door.
I was hoping my nfc phone could copy/mimic/be sent to the same "frequency" as the tab to open the door thus eliminating the need to carry the tab on my key chain.
is there any way my phone can learn the signal?
Man I can't help you with that, but it seems like a cool idea though. good luck
http://hackaday.com/2011/09/30/passive-rfid-tag-cloning/
I believe there are certain door locks that can be opened via bluetooth, so I'd think it's not out of the question
It really depends on the type of technology used in your condo. I checked with one of my friends condo tags and my phone wouldn't recognize it. The phone could read stuff like subway cards and my XPERIA's SmartTags and you can copy all* data from those onto the phone itself.
Moved to Q&A
Please post in the correct section next time
Sent from my Nocturnalized One XL using Forum Runner
Matt1408 said:
It really depends on the type of technology used in your condo. I checked with one of my friends condo tags and my phone wouldn't recognize it. The phone could read stuff like subway cards and my XPERIA's SmartTags and you can copy all* data from those onto the phone itself.
Click to expand...
Click to collapse
could you tell me which app you used for copying the data????
While cool in theory, I would hate for something like that to actually work. The whole point of a system like that is that nobody can copy them, otherwise you could have people who have no business having access to your building able to come and go. Former residents, friends of residents, strangers who happened to see someone's key laying out and quickly copied it with their phone, etc.
For this to work the system would first of all have to be compatible with standard ISO/IEC 14443.
Secondly: modern NFC phones do not support card emulation in the way a "normal" reader would be able to read. You would have to have operator support and special SIM card to be able to clone the card as you intended.
I am afraid that there is no easy solution how to make a normal access control system support NFC mobile phones.
Hi,
I was wondering if NFC on the Galaxy S4 can be used to copy and then transmit data from RFID cards.
I have a swipe card into my building and I was wondering if I could load the data onto my phone. That way I could "swipe" my phone against the reader rather than using the card
Does anyone know if there is an app for this or even if the phone is capable of doing such a thing?
Thanks
Its called NFC Emulation, currently, you cant. Unless the building can detect a visa/mastercard, in which case you could try a virtual wallet.
Search:
http://forum.xda-developers.com/showthread.php?t=1731448
http://forum.xda-developers.com/showthread.php?t=2360413
Hi,
I've read that KitKat brings Host Card Emulation. Do I understand it rignt that I can record any wireless card into my phone and later use my phone exactly as I would use that card? (credit card, tesco benefit card, door card etc.?)
I know I can connect google wallet with US credit card and pay with it, but this is for US only (I'm from Europe) and payments go through wallet account etc.
I would like to use it just as card emulator. Can someone please tell me, how to achieve this?
Is google wallet app necessary (because I struggle a little with country check).
I've tried to search but I couldn't find any usable informations, only discussions that HCE is enabled only for Broadcom NFC chips (which N4 has, so I presume it sould work on N4)
Thanks for any usable info
http://www.xda-developers.com/android/google-wallet-updated-with-kitkat-nfc-host-card-emulation/
I think it doesnt work without Google Wallet but I could be wrong.
We have a NFC hack section on xda..
Sent from my Nexus 4, while driving in my Evo9.