Device, system and method for controlling a passage barrier mechanism

A device comprising:

• a controller in communication with a passage barrier mechanism, the controller configured to:
• while failing to detect, via a biometric imaging system, unauthorized users in a first area of interest of the biometric imaging system:
• maintain the passage barrier mechanism in a multiple entry state in which multiple users at a time authenticate via the biometric imaging system and enter through the passage barrier mechanism;
• responsive to detecting, via the biometric imaging system, an unauthorized user in the first area of interest:
• transition the passage barrier mechanism from the multiple entry state to a single entry state in which only a single user at a time authenticates via the biometric imaging system and enters through the passage barrier mechanism;
• change a biometric authentication range of the biometric imaging system from the first area of interest to a second area of interest smaller than the first area of interest;
• and
• after transitioning the passage barrier mechanism from the multiple entry state to the single entry state, responsive to detecting, via the biometric imaging system, the unauthorized user in a third area of interest of the biometric imaging system, the third area of interest smaller than the second area of interest and closer to the passage barrier mechanism than the second area of interest, temporarily transition the passage barrier mechanism from the single entry state to one or more of a closed state and a locked state in which no users enter the passage barrier mechanism.