The BM684 and BM686 offer the highest level of security (DESFire) in physical access control readers available on the market today. As they are also capable of reading Mifare Classic cards, they allow for a seamless transition for existing Mifare Classic users to upgrade their security platform. The mini readers are a cost effective upgrade solution to existing card readers and they have been designed to be attractive and less obtrusive than traditional high security readers whilst still signifying the trusted security that BQT provides.