InBio controller firmware can be upgraded in the field. Stores up to 3,000 fingerprint templates, 30,000 card users, and up to 100,000 events and transactions. Controller is backed up in real-time in on-board SD card. Data is preserved if power is lost. InBio continues to opperate if network conection is interrupted. Along with relay contacts for controlling door locks, easily programmable auxilary relays can be used for additional control and interface to lights, alarms, annunciators, intrusion detection panels, or even extra locking devices or gate controllers. InBio controllers come in three sizes to suit project needs and reduce the cost of unused capacity. 1-door, 2-door, and 4-door models can be mixed and matched in an optimized system architecture. Anti-Passback, First-Card Opening, Multi-Card Opening, Duress Password Entry, and Auxilary Input/Output Linkages are built into controller firmware. Free SDK is available for integrators and OEM’s to integrate the InBio controllers with their or existing security or personnel management applications. Upon request, ZK can also customize InBio firmware to meet any custom requirements.