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An automated technique for recognizing or affirming the identity of an individual dependent on the examination of two fingerprints is termed as Fingerprint Recognition. Human fingerprints are not easy to manipulate and are nearly unique and durable over a person’s lifetime. They are unique, permanent, easy to acquire, and are a universally acceptable mode of identification [4].

Human fingerprints are difficult to control but remain sturdy over the life of an individual, making them suitable as long stretch markers of human character.

WORKING OF DIFFERENT TYPES OF FINGERPRINT READERS

1 1. Optical Readers’ sensors work using a 2D image of the fingerprint. Algorithms can be utilized to discover novel patterns of lines and edges spread across lighter and hazier zones of the picture

2 2. Capacitive Readers use electrical signals to form the image of fingerprints. As the charges differ in the air gap between the ridges and lines in the finger set over the capacitive plate, it causes a difference in the fingerprint patterns.

3 3. Ultrasound Readers use high frequency sound waves to infiltrate the external layer of the skin which is used to capture a 3D depiction of the fingerprint. It involves the use of ultrasonic pulses using ultrasonic transmitters and receivers.

4 4. Thermal Readers sense the temperature difference between fingerprint valleys and ridges on making a contact. Higher power consumption and a performance reliant on the surrounding temperature are impediments for these readers.