Main Glossary

Main Glossary

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Anticollision Loop

The Anticollision Loop is an algorithm used to start the ISO/IEC 14443 dialogue between a PCD and a PICC out of the total number of PICCs responding to a request command.


The APDU (Application Protocol Data Unit) is the communication unit between a Smart Card and a Smart Card reader standardised by ISO/IEC 7816 on the application level. This interaction occurs after establishment of the communication via Answer to Reset (ATR) and optional Protocol Type Selection.