Introduction - If you have any usage issues, please Google them yourself
At present, there are two modes in the development of smart cards: the Native card mode and the Java card mode. (all are 13.56MHz, which is in line with ISO14443 standard). Its own development card COS belongs to Native card mode (for safety and cost considerations, Native card development mode is recommended).
More detailed description of the Java card, please refer to the RFID Research Report, the relevant information can be used as a reference.