Smart proximity 13.56 MHz keyfob without contact chip (NFC Tag Type 4). 8 KBytes DESFire™ EV2 memory with DES / 2K3DES / 3K3DES / AES encryption. 7-byte random UID. EAL5+ certificate. Made of PVC White, without screen printing. With BRIVO® protected coding. Compatible with BRIVO® B-B and B-S series readers.