In today’s blog, we finish up with Fingerprint Recognition:
The third step in fingerprint recognition is that of template creation, based upon the unique features found in the “minutiae”. The location, position, as well as the type and quality of the “minutiae” are factors taken into consideration in the template creation stage.
Unlike iris recognition technology in which there is only one primary vendor (and thus only one set of algorithms), fingerprint recognition technology consists of many vendors (and thus, many more algorithms). As a result, each type of fingerprint recognition technology has its own set of algorithms for template creation and matching.
The fourth and final step of fingerprint recognition is template matching. This is where the system will either attempt to verify or identify you, by comparing the enrollment template against the verification template.
There are three main technologies available today for the capture of fingerprint images:
(1) Optical technology-this is the oldest and most popular form used for image capture. Essentially, a camera (located in the fingerprint recognition device) takes raw images of the fingerprint. (2) Silicon technology-a silicon chip is used, and the capacitive characteristics of the fingerprint are captured into images. (3) Ultrasound technology-
Basically, an ultrasound image of the fingerprint is captured. This technology has proved to work better than the other two, because it can penetrate through different types of fingerprint dirt and residue.
Stay tuned for the next Biometric Technology to be reviewed tomorrow!