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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How does NFC unlock work?

I am not asking for instructions on how to set it up. I can't find any page or diagram detailing Android's scheme for using NFC modules to unlock devices. What algorithms are used? How about the steps ...
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20 views

Boost NFC by software modifications?

Is it possible to increase the distance of the NFC detection by software modifications or must I make some hardware modifications ?
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1answer
94 views

What is the output of an RFID chip on an average android device [on hold]

It's really difficult to find any sort of information on the internet for this, it would really help me with a research project.
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629 views

NFC Peer2Peer Mode - Android Beam - ISO 18092

I need to find out how in Android Beam the P2P-Mode is managed. I found some general information about P2P: There is an active P2P Mode (not recommended by NFC Forum) and the passive One ...
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2answers
285 views

The difference between NFC mode on Android (e.g. card mode, P2P mode)

On my Samsung Galaxy Note 4, there are two NFC modes: card mode and P2P mode. What is the purpose of these modes? Is there any other modes in NFC?
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12 views

NFC tag changed its available technologies (IsoDep, NfcA and Ndef to only IsoDep and NfcA) [closed]

I'm working on an Android application to interface between a mobile phone and a specific chip that supports NFC, which is called the NF4 chip and is manufactured by EM Microelectronic. Here is a link ...
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1answer
55 views

NFC battery draining through constant use

Does putting a device that constantly checks/uses NFC affect/drain the battery? One example is Dimple IO which puts NFC buttons on the back of your phone.
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4answers
1k views

Dialog option “Use by default for this action” or “Always” not displaying

I just completed my Android application which scans NFC tags. When an NFC tag comes near the device, the device tries to show all the apps which can scan the NFC tag. I want it to remember which app ...
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9 views

Android Beam/Android Pay - Can it be used through an NFC case?

As you may know, Google just introduced the new Live Cases for the Nexus 6, 6P, and 5X. I have one tiny concern though. See, the case has an NFC chip embedded inside of it, and I am a heavy Beam, Pay, ...
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17 views

How to sync 2 folders using NFC between two Android devices running slightly different Android OS versions

I have a Sony Xperia Z3 running lollipop and another jiayu s3 running Android 4.4. Both of them have NFC. I want to sync a folder in internal storage from one phone with another using Android NFC ...
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1answer
45 views

read the chip info from built-in NFC chip in mobile phone

As I know, there is built-in NFC chip at the back of mobile phone such as samsung. So I would like to read the built-in chip info from that mobile phone. Is that possible or silly question?
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1answer
113 views

Login to Android 6.0 with NFC card and Password

I am evaluating MI5 and its NFC functionality. I am considering to compliment my Samsung Galaxy S4 GT-i9506 with MI5 because of various significant improvements in the hardware, software and ...
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26 views

How to find which NFC Chipset my phone has?

Is there a way to find which NFC chipset has my phone? (I tried some HW detectors apps, but none had that information).
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1answer
316 views

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?
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23 views

Open Home screen shortcut from NFC Tag

I have the Google Maps "Driving" shortcut on my home screen and would like to open it from a NFC Tag, there are lots of apps that allow you to write "open app XYZ" to a NFC Tag, but I can't find a way ...
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44 views

Is it possible to test a Note 4 NFC antenna

NFC has stopped working on my Note 4 (N910G). As I understand it, the NFC antenna is embedded in the battery - it seems to be, I can see an antenna. I am using an Anker replacement battery, but NFC ...
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40 views

NFC without swiping and unlocking

I have this app called jiffy, which starts an action when an NFC tag is brought close to my Oneplus One (lollipop 5.1.1 running cyanogemnod). I have a smartwatch that keeps my phone unlocked because ...
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1answer
764 views

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 ...
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1answer
463 views

S4 CM 12.1 Problem with GApps

I've just installed cm-12.1-20151129-NIGHTLY-jfltexx on my S4 (i9505) and Open GApps 5.1 Arm nano 20151129. The setup wizard had few errors (Google play services stopped working) and after setting it ...
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153 views

How to get data (text and pictures) from server via http get request using a NFC Tag (NFC tools)?

On my Android phone I use NFC Tools pro and I want to do following: get text from my server (i.e. to show it in a popup or text-to-speech) get picture from my server and show it I found the "HTTP ...
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74 views

Samsung galaxy s3 i9300 NFC issue

I have a samsung galaxy s3 i9300 which have cyanogenmod 12.1s based rom. The problem is the NFC is not working.. I have tried to flash the stock rom and other custom roms which have different android ...
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1answer
156 views

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 ...
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1answer
62 views

Open Image-link from NFC Tag

I have a NFC-Tag (FeliCa), where I store a URL to an image. (something like https://www.google.de/images/branding/googlelogo/2x/googlelogo_color_272x92dp.png for example). This Tag is emulated by a ...
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1answer
128 views

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: ...
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1answer
5k views

Can I use Google Cardboard with non-NFC phones?

I have recently got a hold of new phone which has 5 inch Full HD screen, so the first thing that I wanted to do is checking out the Google Cardboard VR. But I recently learnt that my phone doesn't ...
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51 views

NFC / Android Beam enabled by default?

Let assume any Android smartphone, that is equipped with NFC and runs on the stock software of one of the many manufactures. Is NFC enabled by default? Is Android Beam enabled by default? I am ...
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141 views

How to write an NFC tag with Driving Directions?

I want to write an NFC Tag on a sticker with something that will directly open Google Maps driving directions to a specific address. I've tried using "NFC Tasks" / "NFC Tools", but haven't found any ...
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1answer
156 views

can you use wireless charging on LG G3 s

can you get wireless charging on the LG G3 s as under the cover on the back of the phone there are two pins that connect to the cover, this cover also has a pad on the back. Thanks.
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23 views

Connect NFC to Galaxy S5

I have a Galaxy S5 and 6 NFC chips: I want to write text to those NFC chips. I've already tried 2 apps: NFC Tools and Trigger. None of these apps hadn't recognized those NFC chips. How can I read ...
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53 views

Is there a way to use a phone as a virtual keychain for NFC tags?

So let's say I have a bunch of things that can be unlocked via NFC. Each thing would correspond with one tag and one tag only. The problem would then be that I'd have to carry a bunch of tags around. ...
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3answers
16k views

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?!?). ...
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1answer
47 views

What are the security implications of enabling NFC on my Andriod device?

My first NFC-capable Android device (running Lollipop) is on its way. I've been doing some research, and got some info on how NFC events are handled internally, but I'd like some more practical ...
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145 views

Kiosk, Rom + Launcher, need a little guidance

I am currently developing a software for use in the Home health industry, which handles Verifying an aid is actually administering care (EVV). This works with GPS and the read of a fixed NFC chip. i ...
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27k views

How to use NFC tags to trigger profiles and tasks in Tasker?

I am planning to get some NFC tags which I want to use to control some profiles in Tasker. Where in Tasked can I choose NFC tag as my trigger? If that does not exist, how can I turn tasks on and off ...
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NFC occasionally stops working. Fixed by battery removal.

I have written an app utilising the NFC radio running on Android 4.4. The NFC radio stops working on 2 occasions : After an APK update. Occasionally at other times. The NFC function is still ...
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1answer
93 views

NFC task for BOTH tag entry and exit

Since picking up a few NFC tags I've been experimenting with automation apps to run tasks for certain contexts (e.g. Car dock). The apps I've tried (e.g. Trigger) are great at running tasks when the ...
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20 views

NFC tag opens in messenger/dialer

I have an NFC tag that contains URL (example: sms:050555555?body=Hello). There are a few NFC reader applications on my phone (LG G3). The first couple of times after I read the tag it asked me which ...
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1answer
262 views

Can Android devices with NFC be used as POS terminals for EMV Chip-and-pin cards?

I know that Square, for instance, makes payment card readers you can attach to phones in order to make transactions using the mag strip, and they're soon to release a new card reader designed for EMV ...
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102 views

Can one NFC tap initiate multiple actions from the same tag?

If a single user taps a single tag a single time, can the tag be encoded such that it both sends an SMS (or, at least, launches the SMS app) and launches a URL connection? Is this the best S.E site ...
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1answer
747 views

How can I use an NFC tag to unlock my device

It seems that some of the NFC lock apps don't integrate into the native lock-screen, but present a custom home screen that blocks access to native home screen. This appears to result a range of ...
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1answer
154 views

How do I transfer one video file from a S6 to an S3 using NFC?

Both my phones are on the same WiFi network and I have NFC turned on for both but what is the qucikest way to select one 400MB file to copy to the S6 through NFC?
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2answers
20k views

Why is the NFC in the Galaxy Nexus battery?

Why is the NFC in the Galaxy Nexus embedded in the battery? Wouldn't it make more sense to separate the two things? Is there any hardware advantage of being this way? Disadvantages I can see ...
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1answer
225 views

Open Google Maps to location with NFC tag

I have an NFC tag containing only one record, in the format of geo: [latitude],[longitude], and when I tap it to my phone the 2 options are the Waze app and Google Maps. Waze opens up to those ...
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3answers
2k views

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 ...
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1answer
544 views

Phone makes sound when waving a credit card near it

I have a Samsung Galaxy S3 and the phone was in my pocket. I forgot that my credit card was also in the same pocket and just out of nowhere my phone played the notification sound, so I pulled it out ...
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0answers
790 views

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 ...
12
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4answers
27k views

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 ...
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9k views

How can I copy a NFC badge to my (rooted) Android phone for Daily Usage

For the Cafeteria a school we have NFC badges with which we pay meals or drinks. I was wondering how is it possible to have the card on my phone? I lost it 5 times last year. I've tried to copy the ...
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57 views

NFC credit card

I'm wondering, if I can use my NFC phone as a credit card... how can I solve it? As I think, Google Wallet has this feature, but I'm not from US, I can't install it from Play. Do someone know some ...
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1answer
13k views

How do I Switch off NFC?

My Nexus S alerts me when it is close to my Oyster season ticket. It says New Tag Collected. Unknown tag type. Can I stop it doing this.