How Biometric Access Control Systems Work

April 15, 2022
 |  Access Control  |  Business Security  |  Commercial Security System  |  Security Tips

A biometric access control system prevents unwanted persons from entering somewhere it is installed. Over the last few years, the usage and popularity of biometric access control systems have increased significantly. This modern security technology has provided a great deal of benefits and helped thousands of industries. This article will explain a biometric access control system, how it works, and its benefits.

What is a Biometric Access Control?

Biometric technology recognizes, stores, and uses the data obtained by users. This data is mainly in the form of unique physical features that humans possess, such as fingerprints, retinas, and facial features. A biometric access control system grants or denies a user access to a building or a part of the building where it is usually installed. This system is mainly used over the globe for security purposes.

How Do Biometric Access Control Systems Work?

Biological Data Collection

Biometric access control systems are equipped with biometric devices that take input from users in the form of biological data. These biometric devices have special sensors and scanners for detecting human biological data. For example, fingerprint biometric devices are equipped with fingerprint sensors. So, when a human being puts their finger on it, it detects the fingerprint.

Data Storage and Usage

This biological data is stored in the biometric system database. It is then used by devices to react according to their program. For example, a finger access control system will save the fingerprint data for each individual.

Detection and Identification

Biometric access control systems are programmed such that they only grant permission to the individuals whose data is already saved. Thus the system allows an individual to enter if it recognizes their biological data from the database. For example, if someone’s fingerprint data matches one of the fingerprints in the database of a system, it automatically performs the following activities according to its program.

Biometric access control systems are not only limited to fingerprint detection technology; retina and face detection technology are also becoming popular lately. However, it doesn’t matter what type of biological data is being taken as input by different systems as the parent concept is the same for each.

Benefits of Biometric Access Control

Although biometric access systems have many benefits for individuals and businesses, some of the significant advantages are summarized below.

Next-level security

Biometric systems provide a whole new level of security for areas limited to specific individuals. That’s why they have gained immense popularity over the past few years. It is impossible to mimic someone’s biological features, making it extremely difficult for them to break into such systems.

Ease of access

Biometric control systems have eased the security and access phenomenon a lot. It has been significantly convenient for security authorities to track criminals with the help of biometric systems.


In addition to all other benefits, biometric access control systems have enabled humans to save tons of time. Imagine waiting in long queues before your turn to be physically detected and verified just to enter or leave a building.


For more information on access control systems, contact Sentry Communications for your home and commercial security systems needs or call 1-866-5-SENTRY.