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 android app detect NFC tag from another phone? [closed]

Is it possible to write an android app that is installed on two different smart phones which allows device 'A' to detect an NFC tag that is given on smart phone 'B'?
3 votes
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media control "resume" and "pause" via NFC tag do not work

Problem description I wrote tasks onto NFC tags to play different playlists in a media player app, to control the media player (Vol +/-, next/previous title, pause/resume, quit media player) and to ...
1 vote
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Does a bank see email address of a Google account if I add a credit card to google pay

If I add a credit card to my Google pay what Google account details is my bank able to see if any?
2 votes
1 answer
48 views

Does a store see my email address when I pay with Google Pay (NFC)

Can a store see an email address associated with my Google account (a card has been added to) when I pay with Google Pay via NFC?
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Cloning NFC from phone

I'm very new to NFC cloning. I am able to clone some NFCs by reading cards with my Android phone, and then writing them to a similar card. I haven't had any experience with cloning block 0 / UID / ...
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398 views

In which markets does the Xiaomi Redmi 10C have NFC?

I just bought a Redmi 10C from an official Xiaomi Store in Malaysia, but I'm from Australia where we don't really have Xiaomi. There's also not really that much info about them in English. I naïvely ...
1 vote
1 answer
452 views

Can I make NFC payments using Google Pay while in airplane mode?

Can I make NFC payments using Google Pay while in airplane mode, like when I don't have cell phone or wifi service (particularly when travelling)?
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How to diagnostically determine the cause for loss of NFC functionality?

My wife has the same phone as I (stock OnePlus 8T Plus 5G, except mine is TMO, and hers is unlocked, both current on updates), but for some reason hers is unable to use the Tap-and-Pay function ...
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Load URL/URI from NFC tag automatically

I have a Redmi Note 8 Pro which can read NFC tags, and I wrote an NFC tag with a custom URI for an app (Obsidian). The custom URI makes the app to open and write something inside it. The "problem&...
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Do contactless payments work on Android 4x these days?

I've seen info that current version of Google Pay requires Android 5 or higher. Is it possible to install and use any application like Google Pay on Android 4.x (with NFC)?
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After I installed an app, the phone now scans NFC every time I unlock the screen (Android 12)

I did not know that an App can modify system behavior like this. I have phone always on silent. I installed "Xiaomi Wear". During installation in Play Store, the phone made a short vibration....
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Google Pay is nowhere to be found

The situation is pretty strange: Google Play store tells me that Google Pay is not compatible with my device (Samsung S10), but I know it is installed and I have used it in the past. When I click on ...
1 vote
0 answers
36 views

Storing NFC credit card near NFC phone

I have a quick question about NFC on Android devices. Assume that I have a device set-up for Google Pay, i.e. I added a credit card. I also have said credit card in my wallet and it is capable of NFC ...
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239 views

NFC tags to execute commands

I would like to know if there is such a possibility to create NFC tag and then use it to execute complex commands on a tablet, for example opening a specific application or changing a certain system ...
3 votes
1 answer
161 views

Does play store filter out NFC apps for phones which do not have NFC?

I'm developing an Android app based on NFC technology. So when my app goes live on the play store, will the app be displayed for people having non-NFC phones? Will they be shown a message like "...
2 votes
0 answers
153 views

NFC: Spotify URIs open app, not specified resource

My goal is to program NFC tags in such a way, that Spotify starts playing a specific track/album/playlist. But after writing a Spotify URI (e.g. spotify:track:6rqhFgbbKwnb9MLmUQDhG6) to my tag, it ...
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How to drive Philips Hue lighting with NFC tags

Recently I came to use my NFC tags again. Wondering how I can use my NFC tags to automatize chores like: Turn the light on at noon (Alexa/Philips Hue) Turn the light off at midnight In essence I ...
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How to use NFC Tools to write a 540 byte file to NFC Ntag 215?

It seems Tagmo is a tool to write NFC tags, but when I searched on the Google Play Store, NFC Tools came out, not Tagmo (and it has a 4.4 out of 5 rating), so I tried using it to write a .bin file ...
2 votes
0 answers
1k views

Using USB NFC reader as native from Android Emulator

I'm testing an Android app that uses NFC. However, my actual testing phone does not have NFC capabilities built-in. What I do have is a USB NFC reader for Windows. Is there a way I can open my app on ...
7 votes
2 answers
37k views

How to emulate a NFC card with an Android phone?

I have installed several "NFC tools" apps, and I am able to read a NFC door card. It seems to be able to duplicate it (when I'll have a blank NFC card) or even write new NFC tags. But I'd like to do ...
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1 answer
2k views

Do wireless charging adapters interfere with NFC?

I've just got a Huawei P30 (standard, not Pro or Lite) and realised it doesn't feature NFC - with no less than 4 wireless chargers in my house and 2 in my office. But I use Google Pay all the time - ...
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111 views

Is there a way to activate NFC during initial phone setup?

My mdm (Ivanti/Landesk) requires to deploy an APK through NFC during the initial phone setup (and only during this setup, where you need to set the langage, time zone, google account, etc.) . This is ...
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Can I emulate my NFC credit/bankcard with my phone?

down vote favorite Samsung Pay, Google Pay, Apple Pay or anything else isn't enabled in my country, but I do know that my card is using NFC. From what I have read there is a possibility that it can't ...
0 votes
1 answer
1k views

Samsung Galaxy emitting constant beeping sound

My Galaxy (A8) is emitting a constant beeping sound every few seconds. I tried the following, per various online suggestions: Wiping the cache (by entering into recovery mode) Closing all ...
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1 vote
1 answer
447 views

How to use Glase on a rooted Android device?

How can I use the Tap and Pay payment app Glase (formerly SEQR) on a device which has been rooted using Magisk?
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79 views

Will leaving a device on an NFC tag do any harm? [duplicate]

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 ...
1 vote
1 answer
635 views

Device fails to install provisioning app

I'm trying to provision a Huawei Y6 (MYA-L11) with a custom Device Owner app via NFC after a factory reset. However, once it has downloaded the admin app, I get a message box: "Oops! Couldn't install ...
3 votes
1 answer
5k views

What is the catch with microSD cards that have NFC support and will my Xiaomi Mi A1 support it?

I recently bought myself a Xiaomi Mi A1. Because it has a microSD card slot I'd like to buy a card. I noticed that some have NFC. Is it worth It? Is this real NFC or just a gimmick feature to buy such ...
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How to get Feitian MultiPass FIDO U2F working with OnePlus 3T?

Feitian MultiPass FIDO has 3 ways to work as a hardware token: BLE, NFC and USB. I'd like to use it either with NFC or BLE because the USB input can be occupied, and I have a feeling anyway that the ...
-1 votes
1 answer
753 views

Can Liquid screen protector be applied to the back of a phone [closed]

This is more of a hardware question... I got my LG V30 recently, and after a few days of usage without a case, I noticed I got a feel minor scratches, and one bigger one. My question is this? Can I ...
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1 vote
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147 views

How can I trigger an action on one Android device with another Android device?

I recently got a new device and my old device will now be used as a music player with my bluetooth speaker. However, I wanna save battery by not having the old device's bluetooth on the whole time. ...
0 votes
2 answers
746 views

Firefox hijacks YubiKey NFC

I'm using a YubiKey Neo configured as an one-time-password generator. I'd like to use it with the YubiClip app but every time I pass it next to my phone, Firefox (my default browser) opens with a ...
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Multiple uses for NFC

I have my bank card linked to my NFC and since this day it is also possible to have my public transit card assigned to my NFC-chip. The thing I want to know is, is it possible to have multiple ...
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NFC-Tagtype isn't supported

I've got a Samsung Galaxy S6 and recently updated my software to Android 7.0. Ever since I updated my Samsung Galaxy S6, my NFC Tag reader apps stopped working. Is this a known issue? I've tried ...
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1 vote
0 answers
104 views

Is it possible to have the NFC URL reuse a browser tab?

When I tap an NFC tag with url in it, it gives the option to open the link in the browser. If I go tap that tag again or another similar tag, it prompts user to open the url again in another browser ...
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2 votes
2 answers
4k views

NFC on S4 doesn't work at all

I have an S4 with which I try the Yubikey Neo with NFC on. I also tried another tag but I can't get any response from the phone whatsoever. Not even a beep. NFC is turned on for sure. I bought an (...
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Can i use NFC for File Transfer in Motorola X?

My friend is using Motorola X with NFC, but he can't transfer files through it. How do you transfer files through NFC on Android?
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1 answer
702 views

Smart Lock unreliable/not working with NFC tag?

I’ve been trying to get Smart Lock to work on my Android device (OnePlus One on Cyanogen OS 13.1.2, i. e. Android 6.0.1/“Marshmallow”). I’ve configured an NFC tag as a trusted device and want to ...
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1 vote
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140 views

Does Galaxy Xcover 3 Value Edition support Mifare Classic NFC tags?

The Samsung Galaxy Xcover 3 is one of the few devices that still support Mifare Classic NFC tags. It was released in 2015. Now Samsung have released an updated version, the "Value Edition" in 2016. ...
2 votes
1 answer
18k views

Which Android phones support MiFare Classic NFC tags? [closed]

I have to use MiFare Classic NFC tags, which Android phones can read and write to it? Couldn't find it on the internet.
9 votes
1 answer
39k views

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 ...
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2 votes
0 answers
853 views

How to get rid of NFC icon?

After a forced OS reinstall by a repair shop a Sony Xperia Z5 Compact started to show a NFC icon in a status bar. How to get rid of it? It does not give any information as it is always on, so it is ...
1 vote
1 answer
568 views

Can I pay with my phone if I switch to Cyanogenmod?

I own an Oneplus 3 and a NFC sim card. In order to use the banking payment app of my bank (Rabobank Wallet: https://www.rabowallet.nl/ / Netherlands) I need a phone with android supporting open mobile ...
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570 views

Can't enable NFC on Samsung Galaxy S3

For some reason I am unable to enable / use NFC on my Samsung Galaxy S3 (i9300). When I got the phone, it did work. A month ago, I wanted to use it again and it did not work. I am currently using a ...
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51 views

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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6 votes
2 answers
8k 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?
1 vote
1 answer
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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.
0 votes
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151 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 ...
3 votes
1 answer
253 views

Read the chip info from a built-in NFC chip in mobile phone

As I know, there is a built-in NFC chip at the back of a mobile phone such as Samsung. So I would like to read the built-in chip info from that mobile phone. Is that possible?
4 votes
2 answers
1k 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 ...