BS ISO/IEC 14443-3:2018+A1:2021

This document 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 document is applicable to PICCs of TypeA and of TypeB (as described in ISO/IEC14443‑2), to 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 document are defined in ISO/IEC10373‑6.