I was curious about a system using NFC and I tried to find out what was the protocol. But after digging few days around, I have the card detected by my reader (acr122u) but that's all I get. I can't have any answer from the card.
nfc-list uses libnfc 1.7.1 NFC device: ACS / ACR122U PICC Interface opened 1 ISO14443B-2 ST SRx passive target(s) found: ISO/IEC 14443-2B ST SRx (106 kbps) target: UID: 9a 87 18 4e XX XX XX XX
How can I get more informations on it ? Is it possible this card was only giving its UID ?