The rf, Programmable proxcard ii proximity access card is the industry choice for an economical choice to proximity access control. Proven, Reliable technology, Offers extremely consistent read range. Unaffected by body shielding or variable even when, Environmental conditions close to keys and coins. Convenient to use, Can fit into a wallet or purse. Use with a strap and clip as a photo id badge. Cross, Reference, A cross, Reference list correlating the external card number and the programmed id number is supplied for easy system administration. Security, Offers over 137 billion unique codes. Prolonged lifespan passive, No, Battery the configuration permits an infinite number of reads. Durability, Strong, Flexible and resistant to cracking and breaking. Companion products, 1321 photo pouch overlay 1324 pvc direct print overlay