Today all of the manufacturers that are seriously committed to RFID technology are adopting the ISO (International Organisation for Standardization) and IEC (the International Electrotechnical Commission) specification 15693 to define the way RFID “Contactless Integrated Vicinity Cards” look and communicate.

Originally ISO 15693 was intended only to be the standard for contactless smart cards. Soon after its introduction it was further adopted by the world’s leading RFID suppliers, Texas Instruments and Philips Semiconductors, to be their guideline for future high frequency RFID transponders.

The ISO 15693 specification is broken into three main sections; (1) describes the “Physical Characteristics”, (2) describes the “Signal Interface” and (3) describes the “Transmission Protocol”