LITERATURE REVIEW

JOURNAL 2

ELECTRONIC LOCK

An electronic lock (or electric lock) is a locking device which operates by means of electric current. Electric locks are sometimes stand-alone with an electronic control assembly mounted directly to the lock. Electric locks may be connected to an access control system, the advantages of which include: key control, where keys can be added and removed without re-keying the lock cylinder; fine access control, where time and place are factors; and transaction logging, where activity is recorded. Electronic locks can also be remotely monitored and controlled, both to lock and unlock.

Electric locks use magnets, solenoids, or motors to actuate the lock by either supplying or removing power. Operating the lock can be as simple as using a switch, for example an apartment intercom door release, or as complex as a biometric based access control system.

There are two basic types of locks: "preventing mechanism" or operation mechanism:

Types:

• Electromagnetic lock
• Electronic strikes
• Electronic deadbolts and latches

Authentication methods

• Numerical codes, passwords, and passphrases
• Security tokens
• Biometrics
• RFID

Credit to : Reuban, S. (2014). Desing and Implementation of A Microcontroller Based Automatic Door NAd Visitor Counter.