Access control system identifies and verifies the person seeking entrance, once the Access Control system has confirmed the identity of the person at the door; a valid input will produce an output which has the effect of releasing the door to allow access by using one of the following methods:

• Voice recognition.
• Biometric recognition (Fingerprint, Iris scan, Signature).
• Password or Digital Code.
• Cards, tokens or keys.

Types of Access Control Systems:

• Audio-Video Door Entry System.
• Digital Electronic Keypads.
• Card Based System.
• Proximity and Hands Free System.
• Token and Intelligent Key System.
• Biometric System.
• Combinations of the various types may be incorporated.
• On line systems.