Biometric Access Control is a system that holds the door for intruders and prevents them from accessing the resources by verifying them as unauthorized persons on the basis of biometrics authentication. In Biometric Access Control system, biometric authentication refers to the recognition of human beings by their physical uniqueness.

Biometric Access Control system works on substantiation. Biometric Access Control system scans the person and matches his/her biometric data with the previously stored information in the database before he/she can access the secured zone or resources. If the compared information matches, the Biometric Access Control system allows the person to access the resources. Today, Biometric Access Control system is considered to be the best and one of the most secured authentication systems amongst the other access control devices.