lib-nfc

问题 I installed the libnfc on my ArchLinux and i would use it through my Adafruit PN532 arduino SHIELD. nfc-list returns me the message "No NFC device found". I have the following file in /etc/nfc/devices.d/pn532.conf that gives me nfc-list uses libnfc 1.7.1 error libnfc.driver.pn532_uart pn53x_check_communication error error libnfc.chip.pn53x Unexpected PN53x reply! nfc-list: ERROR: Unable to open NFC device: pn532_uart:/dev/ttyACM0 Any idea about how to fix that ? TY 回答1: First of all verify

问题 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) where my host acts as the secure element. My reader works great with opensc-tools to list the reader. I suspect multiple processes are competing for the USB device. This section from libnfc indicates a related device (the SCL3711, which is

问题 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) where my host acts as the secure element. My reader works great with opensc-tools to list the reader. I suspect multiple processes are competing for the USB device. This section from libnfc indicates a related device (the SCL3711, which is

问题 See NFC reader "SELECT (by AID)" APDU is not routed to Android device on debugging and eventual results. TL;DR the reader might simply be defunct. I have ACR122U nfc reader. I try to run this example http://www.nfc-tools.org/index.php?title=Libnfc:APDU_example#apdu_example.c on my Ubuntu machine. This is the log output I get when I tap my Android device (should be in HCE mode) to the reader: ./apdu_example debug libnfc.general log_level is set to 3 debug libnfc.general allow_autoscan is set

问题 I have trouble with using my ACR122U RFID card reader form ACS. I need to connect it to my Mac using the PC/SC driver. I installed the driver from the ACS website and confirmed that it's running. However, whenever I test using the nfc-list command, I get the following error: nfc-list uses libnfc libnfc-1.7.1-189-g2869ae2 error libnfc.driver.acr122_usb Unable to claim USB interface (Permission denied) nfc-list: ERROR: Unable to open NFC device: acr122_usb:020:002 As far as I've understood from

问题 I am very new to NFC devices reading but I have managed to implement in my own project using the code from nfc-mfultralight.c (libnfc). What I don't understand is that when I read the data from a MIFARE Ultralight band, I get lots of garbage. For example, I have the number 255555574558888 in the tag (I used an Android device to write this number to the tag). Now when I run: nfc-mfultralight r /home/user/dump I get this d▒r▒!▒ H▒▒U255555574558888▒-67644-67546-2346 This is from the examples of