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Thanks to Gilles Dumortier for his help.

ISO/IEC 14443 : Proximity cards

ISO 14443 is an international standard for « Proximty Cards », i.e. contactless cards operating at the 13.56 MHz frequency, with a maximum operating distance of 10 centimetres.

The standard

These documents are Final Comittee Drafts. They are not the official documents (which must be purchased from ISO or from your national standardization agency), but are very close to them.