Android Enthusiasts Stack Exchange
Android Enthusiasts Stack Exchange

Questions tagged [nfc]

Near field communication (NFC) allows wireless data exchange between two NFC devices in close proximity to each other. NFC devices are very small and can, for example, be integrated in cards.

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Can I "clone" my credit card using the Nexus S and Galaxy Nexus's NFC chip? If not, why not?

Can an android app read my credit card's NFC data, store it and then send this data to a contactless pay point (PayPass)? Thus I would use my Nexus to pay for my coffee, conveniently. If yes, is there an app for this? If not, why not?
William C
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How to know if my phone has NFC technology?

I bought the Samsung Galaxy Note phone in Greece, but the store in which I bought the phone brought it directly from Samsung in France (that's what they told me), and the language that the phone had when I first booted the device was in German (so I…
el10780
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Is it possible to add the NFC to the phone which does not have it?

My phone is a Motorola Moto 2g LTE (xt1072). It is really good phone but there is a one problem, it does not have NFC. Is there any solution, to add NFC to the phone which does not have it – and would Android be able to use it then? If yes to both,…
FieryCod
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Does NFC enabled phone means the phone has an NFC tag inside?

I would like to clarify what it means when Android phone is a "NFC enabled phone" (example list on RapidNFC). Does this mean the following: The phone can read and write NFC tags? The phone should also have a NFC tag inside so others can read…
Nap
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What happens when I tap an NFC tag which contains a URL?

I don't have an NFC 'phone to try it out. A colleague absolutely insists that if you tap an NFC tag which stores a URL then that URL is launched automatically by the operating system. That doesn't sound right to me and the developer docs says…
Mawg says reinstate Monica
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Is it possible to have a phone alarm go off if it moves a set distance away from a NFC tag?

I have a bad habit of leaving my phone around. I want my phone to alert me if it gets to far away from me. If this is possible how can I set this up?
iambriansreed
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Why does Nexus 5 HCE respond to FELICA select?

I have an NFC reader constantly polling for tags present. I also have a Nexus 5 with a HostApduService activated. When repeatedly tapping the Nexus 5 on the reader, the reader reports a FELICA (JIS: X6319-4) tag found in 9 out of 10 cases. About 1…
Hauke
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Can I encode an NFC tag to send HTTP POST data?

Can I encode an NFC tag to send HTTP POST data? Or can I only use HTTP GET? I have Googled extensively, but can't seem to find an answer (which, I suppose, implies that it is HTTP GET only, but I would like someone to say so). [Update - 6 years…
Mawg says reinstate Monica
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Can Android NFC devices be used to clock in a RFID/HID timeclock for work? (As a tag?)

Can Android devices be used to clock in a RFID/HID timeclock for work using NFC? Using the software, I can register the cards with the timeclock. But would I be able to register phones?
CREW
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How can I test the NFC capability of my Android?

I got a Nexus 7 last week, and I love it! It has NFC functionality, and I was wondering how I could test it? I don't actually have any NFC tags that I can use (have you seen the price of them?!?). So, how can I test NFC without NFC tags?
Liam W
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Cloning room key card by using NFC

I live in a youth hostel of an university and we access our rooms and labs by using a contactless key card. I want to clone my card to my phone. Is it possible to copy when it is key protected? Can it be hacked?
A.T.
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Truncated text from NFC tag

The NTAG216 can hold 800+ bytes of information. But when I scan it with my Samsung S4, it will only show 5 lines of text followed by an ellipses (...) which is at most about 270 bytes. I've tried it with 2 other Samsungs and an LG with the same…
Steve V
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NFC for PC using libnfc

Is it possible to use the phone's nfc hardware as a NFC reader for PC (installing some app or using netcat with some /dev/ file)? My phone has pn544 chip, it seems it is available as /dev/pn544
KOLANICH
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Can I use my phone as a MIFARE Classic card?

I use a MIFARE Classic badge to access my building (the system is a French one: VIGIK). I cloned a few tags already (tag to tag) and was wondering if my Galaxy S22+ with Android 13 could act as a tag, replacing the physical one? (I would like to…
WoJ
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Will leaving a device on an NFC tag do any harm?

I want to leave my phone sat on an NFC tag all day long - will it do any harm to either the phone or the tag? I'm worried about Android constantly trying to read the tag all day, and that this could cause unecessary battery use, the tag could get…
stripybadger
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