The term access control refers to the practice of restricting entrance to a property, a building or a room to authorized persons. It determines who ,when and where they are allowed to enter or exit.
Electronic access control uses computers to solve the limitations of mechanical locks and keys. The system will also monitor the door and alarm if the door is forced open and held open too long after being unlocked.
There are 3 types of authenticating information.
- Password or PIN
- Smart card or key fob
- Fingerprint verified by biometric measurement.