Smart Card database by ATR

As described in Part 3 of ISO 7816 specifications, the ATR is a sequence of bytes sent by the microchip when replying to a RESET signal. In practical terms, each RESET operation induces on the I/O contact a microchip’s reply constituted by up to 33 characters coding a set of information relating to microchip’s characteristics such as: supported transmission protocols, installed operating system, microchip’s version and manufacturer and so on. [Prosegue]