This infinias clamshell access control proximity card offers a 2.5"³ 24"³ read range (depending on the reader and local installation conditions), and features an external number for easy identification and control. The 26-bit card supports over 137 billion codes and fits easily inside a wallet, pocket or purse. The white clamshell proximity card has a textured surface and has a convenient card slot for attaching a lanyard or badge clip.