In the context of smart cards, an application protocol data unit (APDU) is the communication unit between a smart card reader and a smart card. The structure of the APDU is defined by ISO/IEC 7816-4 Organization, security and commands for interchange.
ACS Launches ACOS5-EVO Cryptographic Smart Card
HONG KONG, 3 May 2019 - Advanced Card Systems Ltd. (ACS), Asia Pacific's top supplier