Hope you are doing great, please follow the documentation in our webpage and in Mifare.net as you may know this two tags are T2T which means the speed is 106kbps. you are saying the cards answer with a RATS, well this is not possible directly form the cards, since this cards are ISO 14443-3 they answer to a REQA command with ATQA, this will activate the card in ISO 14443-3 to activate a card in layer 4 of this iso ( which is the layer for smartcards like DESFire or Plus) you send a RATS and the card answers with an ATS. I assume you might be using a PC/SC reader device that usually work on layer 4, and when a type 3 tag is detected a pseudo ATS is generated to comply with the reader communication.
Hope you are doing great, please follow the documentation in our webpage and in Mifare.net as you may know this two tags are T2T which means the speed is 106kbps. you are saying the cards answer with a RATS, well this is not possible directly form the cards, since this cards are ISO 14443-3 they answer to a REQA command with ATQA, this will activate the card in ISO 14443-3 to activate a card in layer 4 of this iso ( which is the layer for smartcards like DESFire or Plus) you send a RATS and the card answers with an ATS. I assume you might be using a PC/SC reader device that usually work on layer 4, and when a type 3 tag is detected a pseudo ATS is generated to comply with the reader communication.
Hi Jonathan, thank you very much for your prompt reply.
I'm using PN7462 and NFC Reader Library but I forgot to reset ATS buffer before each discovery loop, so I was actually decoding stale ATS from previously detected T4T cards.
