Access control systems are used to restrict entry into premised to authorize personnel only. A basic access control system comprises of a reader, controller, and an electronic door licking arrangement using an electromagnetic lock or electronic door licking arrangement using an electromagnetic lock or electric door strike. However, diverse and extensive system can be designed by using different kinds of readers and controllers, door locks, REX detectors, turnstiles, tailgating detectors, etc.

Various Kinds of PC base and non-PC based access control systems are available using various technologies viz. :

– Keypad access control.

– Swipe card access control (magnetic swipe cards, bar code swipe cards, Wigand swipe cards, etc.

– Proximity card access control.

– Biometric access control using readers which read and identify unique characteristics of the user e.g. fingerprint, palm print, etc.