T=0 is a character protocol: bytes travel one at a time, each with a parity bit, and the receiver signals a parity error by pulling I/O low so the byte is repeated. Commands are sent as a five-byte header, and the card steers the rest of the exchange with procedure bytes.
T=0 transport
Needs: Supporter
APDU cases, procedure bytes, 61xx and 6Cxx, and how EMV commands travel on T=0.
This is a supporter feature. Create a free account, then try every supporter feature free for 7 days.
The opening of the article
In the full article
- The header
- Procedure bytes
- The four APDU cases on T=0
- EMV rules worth knowing
The rest of the article opens with a supporter pass, which you can try free for 7 days.