Biometric access systems require a number of processing components. The system first obtains the biometric data; the collection mechanism may be a sensor, a reader, a camera or even an application that captures the speed and rhythm of a person's keyboard strokes. The system then extracts specific features of the data, such as a signature's pressure points. These data are then converted into mathematical code, which becomes a template. Each time that a person submits himself for identification, the system compares the biometric data with the stored template to determine if there is match.
Biometric analysis of the eye can apply to the iris or retina. Face biometric systems encompass video face recognition and thermal imaging. Finger-scanning systems examine pores, density of fingers, minutiae points and space between ridges. Other biometric systems use hand or finger geometry, signature or speaker verification, ear shape, body odor and DNA.
Biometric access provides immediate proof of identity. For businesses, these systems can help to not only prevent fraud and identity theft but to enhance customer service.