BS ISO/IEC 14443-3:2016+A1:2016

This part of ISO/IEC14443 describes the following: polling for proximity cards or objects (PICCs) entering the field of a proximity coupling device (PCD); the byte format, the frames and timing used during the initial phase of communication between PCDs and PICCs; the initial Request and Answer to Request command content; methods to detect and communicate with one PICC among several PICCs (anticollision); other parameters required to initialize communications between a PICC and PCD; optional means to ease and speed up the selection of one PICC among several PICCs based on application criteria; optional capability to allow a device to alternate between the functions of a PICC and a PCD to communicate with a PCD or a PICC, respectively. A device which implements this capability is called a PXD. Protocol and commands used by higher layers and by applications and which are used after the initial phase are described in ISO/IEC14443‑4 . This part of ISO/IEC14443 is applicable to PICCs of TypeA and of TypeB (as described in ISO/IEC14443‑2 ) and PCDs (as described in ISO/IEC14443‑2 ) and to PXDs. NOTE1 Part of the timing of data communication is defined in ISO/IEC14443‑2 . NOTE2 Test methods for this part of ISO/IEC14443 are defined in ISO/IEC10373‑6 .