The document describes the iCLASS Prox Card, which combines 13.56 MHz contactless smart card technology and 125 kHz proximity technology on a single card. The card provides flexible access for applications like access control, biometrics, transportation, and loyalty programs. It stores data in multiple securely separated files and is available with various memory sizes and features like magnetic stripes and photo IDs. The card uses encryption and authentication for secure communication between cards and readers.