I have an app that reads various types of NFC tag. For years it's worked fine, but with newer Android devices a java.io.IOException is thrown consistently when scanning a particular type of tag. Th...

I did enough research on reading RFID tags using Android phones(smart phones). My understanding of this is that for NFC-enabled smart phones (Nexus S) it is possible to read RFID tags, but ...

I'm trying to use NFC Hardware from my device. But, the problem is that when I register the Activity to receive the Intent: PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, new Int...

I want to use my ACR122U contact-less smart card reader in Ubuntu 14 smarty. So I installed my required packages and drivers. Finally when I want to use the reader I receive the following error: ...

I'd like to read and write NFC tags from within browser chrome or safari on iPhone and iOS devices. Usage seems straight forward according samples and seem to work for android after activating the ...

Although many topics have already talked about the impossibility for an iPhone to emulate an NFC tag, I found this document that talks about card emulation based on the PassKit (on page 6). By imag...

I have a class, which creates conncection to NFC and two activites. Both of them creates an object of that class so they can connect to NFC. Earlier it worked somehow but now I've got problem - my...

How do I write NDEF message to NFC tag? Do I have to change manifest file? So far I have code to generate NDEF message: public NdefRecord createTextRecord(String payload, Locale locale, boolean en...

I just started coding with Android NFC, i've successfully read and write NDEF data into mifare classic tag. The problem is when app read the payload from ndef record, it always contain character '*...

I'm trying to update a password protected ndef216 mifare tag. I send the authenticate command and then overwrite my pack&pwd values to verrify the authentication is successfull. then when i use...

From my reading and experimentation I have found that Android devices use some method to prevent duplicate reading of a tag (as discussed here). This is great for power conservation however limits ...

I'm trying to get an instant app to be opened via NFC. I have something like the below in my AndroidManifest.xml <intent-filter android:autoVerify="true"> <action android:name="android....

Is it possible using ATR to determine whether I have ISO14443A or ISO14443B type card? If yes, how?

I'm trying to read the UID for a mifare tag. Looking at examples, I see the following method a lot: func tagReaderSession(_ session: NFCTagReaderSession, didDetect tags: [NFCTag]) { if case let...

This is my Torch app: final Camera.Parameters p; Camera camera=Camera.open(); camera.setPreviewTexture(new SurfaceTexture(0)); p = camera.getParameters(); p.setFlashMode(Camera.Parameters.FLASH_...

I have created an app with the Core Bluetooth framework. My IOT device contains both Bluetooth and NFC. When I bring my Apple device in to NFC range, the Apple Pay popup triggers. Is their any way ...

I want to ask 2question about nfc card emulate : can I emulate nfc card include uid that I select? I read HCE and don't understand what is the diffrent between HCE and Card Emulation with a Secur...

I need to implement NFC (near field communication) in a PWA (progressive webapplication) Every browser I have tested (Chrome MacOSX, Safari MacOSX, Safari iOS, Chrome for android) does not include...

I have an Identiv uTrust 3700 F CL Reader that I can't setup with on macOS Catalina 10.15.4. I would like to read NDEF Tags, use U2F (FIDO2 CTAP1) via NFC, and emulate a card from the reader (for o...

Hi I am trying to read from NFC Tag. But I am getting an exception. I have put this condition to detect the tag? if(NfcAdapter.ACTION_TAG_DISCOVERED != null) Whether this condition is correct? ...

We are developing PWA for our app because it's capable of 99% of our needs , however we do need NFC reading capabilities (not writing) and we would hate to abandon PWA and go Native just for this 1...

Android 4.4 introduced Host-based Card Emulation (HCE). As you know, all NFC cards come with a fixed card ID (NfcAdapter.EXTRA_ID). My office door access usually detects the NFC card ID for the a...

I am working on an Application using the IsoDep Tag Tech to issue APDU commands to an NFC enabled card. UPDATE: So the issues seen below seem related to the power requirements of the cards I am us...

I would like to retrive the UID of MiFare cards. I'm using an iPhone X, Xcode 11 and iOS 13. I'm aware this wasn't possible (specifically reading the UID) until iOS 13 according to this website: ...

I know it's not possible for the iPhone 6 to read RFID tags, and I know that the iPhone API only allows use of NFC for Apple Pay, but is it possible to read an iPhone's NFC chip as if it were an RF...