BS ISO/IEC 14443-4:2008+A4:2014 - Page 3

Identification cards. Contactless integrated circuit cards. Proximity cards. Transmission protocol | Status: Revised, Superseded, Withdrawn

1 Scope This part of ISO/IEC 14443 specifies a half-duplex block transmission protocol featuring the special needs of a contactless environment and defines the activation and deactivation sequence of the protocol. This part of ISO/IEC 14443 is intended to be used in conjunction with other parts of ISO/IEC 14443 and is applicable to proximity cards or objects of Type A and Type B.