Brivo Unified Credential - Smart KeyFob EV3 - 8K. Secure operation across a range of Locksets and Readers Use Brivo Unified Credential when you demand the latest in secure access, but need the flexibility and convenience to leverage existing RFID credentialed door locks and devices. Compatible with Brivo B-BS, B-BSP and B-S Gen 1 and Gen 2 series smart readers and Allegion NDEB, LEB, AD400(MT) and select Assa Abloy Aperio locksets. 37-bit format Quantity 25. Brivo Unified Credential is built on 13.56 MHz, MIFARE DESFire EV3 using the LEAF File Structure. This integrated credential works with selective partners through the registration and deployment of the Brivo shared keyset.