The RS2 34 bit card is a special version of an AWID Prox-Linc CS card, programmed with a propietary 34-bit format owned by RS2 Technologies. The AWID Prox-Linc CS is a standard non-printable "Clamshell" style Prox Badge Credit card size with beveled edges Pre-punched in portrait orientation Accepts "Photo-flap" and self adhesive badge overlays Clamshell style proximity badge, pre-punched in portrait orientation Minimum order: 100 cards More info..