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Questions tagged [lib-nfc]

libnfc is the first libre, platform-independent, low level NFC SDK and Programmers API.

libnfc is the first libre, platform-independent, low level NFC SDK and Programmers API.

Official page: http://nfc-tools.org/index.php?title=Libnfc

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It is possible to share data between two android devices through NFC in flutter?

I am developing two apps (with flutter) that need to pass data to each other through NFC, but I don't find any way to do it. NFC libs in flutter only can read and write data to a nfc tag, but not send it. I've tried to make one of the devices a HCE…
EdgarX
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How to find the Glucose value in freestyle liber using NFC

I have tried to take glucose value, by help of this Article, I came to know that freestyle liber has Trend records (8hr) and History records (24hr) will carry glucoses. I have searched for android and flutter to take the glucose value form freestyle…
Balakumaran P
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share a text between two mobile devices using Flutter NFC

I'm trying to configure NFC in flutter and find a Near by Device using it and while tapping the two devices the text Message should be shared from one device to Another couldn't able to find any Perfect Example or a Tutorial regarding my requirement…
Guru Subramani
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libnfc fails to connect to PN532 via I2C with timeout error

I want to read NFC tags using a PN532 NFC reader, which is connected via I2C to a Raspberry Pi Zero. The Pi has I2C enabled via raspi-config. When attempting to access the device using nfc-list or nfc-pull I get a timeout error: $ nfc-list debug …
Alex
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NDEF File works only on some apps (URL)

I am trying to emulate an url tag using libnfc and a PN532 module. The ndef file works on "GoToTags" for IOS but it doesn't on "NFC Tools" or "NFC". If I try to background-read it in android, it will say that there's not an available app for it even…
David Fr
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Python nfcpy showing acr122u usb device but not reading

I have nfcpy installed on my Raspberry Pi and when I run the following command python -m nfc I see the USB NFC Reader I then created a python script called "test.py" and put the following code in it: import nfc clf =…
John Roberts
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Revolut visa Debit card not detected by libnfc6

Trying to read various payment cards using PN532 NFC RFID Module. libnfc6 sucessfully polls most of the nfc cards and even mobile payment method is detected, but none of my Revolut cards are detected by nfc-poll app. libnfc was compiled locally from…
alex
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Reading from an NFC reader directly into a desktop web application?

I have LibNFC working from the Linux terminal recognising my ACR122U Reader, and I wanted to know if there was a method for it to work through Chrome on a Linux Desktop as it is really similar to Android Support, with all the NFC device handling…
rxm
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Get started with Android NFC

Im new to the NFC plattform on Android and i would like to get started with an simple NFC app, That read tags and write tags. Is there any like good guide or libary on this subject?. I have read the android documentation which is a good start but i…
user5668480
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macOS 10.15.4 - external NFC Reader over USB (CCID & PC/SC compliant) for Host Card Emulation

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 other readers to read, like an Android or iOS device)…
Jared
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"Time Out, the target has not answered" from ACR122U reader with Jewel/Topaz512 NFC tags

I am building a Windows/Java program (using javax.smartcardio) to communicate with Jewel/Topaz512 tags (from Innovision/Broadcom) using an ACR122U device (with a PN532 NFC Controller chip inside). I implemented the Topaz512 protocol (from this data…
Marc de Verdelhan
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Read and write desfire ev1 with libfreefare acr122u

According to documentation, and defines/examples mentioned inside libfreefare(libnfc) project, This combination should work well: libfreefare(libnfc) + acr122u reader + mifare desfire ev1 card however after week of testing it on 3 diferent linux…
Asain Kujovic
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How to interpret this nfc ndef payload used in libfreefare example?

I am trying to write an encoded ndef message using libfreefare example code. Would like to know how to interpret the below hex codes. I have already gathered some knowledge about NDEF format but those are little unhelpful to translate the below…
Shameer
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NFC authentication

I am getting the uid of a NFC tag by sending and receiving APDUs from the card. Storing them in a database. While loggin in I am comparing the logged in user tag id with the database for authentication. That works but Is this the right way of NFC…
san
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Sending APDU command for reading a passive tag?

I'm using libnfc and the apdu_examle.c with PN532 on my Beaglebone. I have a android example for emulating Miffare classic 1k card HCE(Host Card emulation) on my phone and everyting is working fine. If I tap the phone I can read the message that I'm…
suadss
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