In daily life, we do recognize each other not by fingerprints, palm prints, iris, etc., but by human face . Thus, facial recognition technology is the most attractive one among biometric technology , it is the most intuitive and natural , it has the following advantages:

1. Non-contact, user acceptance is high
Facial recognition technology using cameras as the identification information acquisition, it obtain human facial features and complete face verifying in non-contact automatically.

2. High speed identification
Compared with other biometrics authentication technology, face recognition is a kind of automatic identification technology, which with faster verification. Not perceived characteristics comparing is important, which makes the identification method is not offensive, and because it is not easy to cause people's attention.

3. Difficult to counterfeit
Face recognition technology requires identification object must come to scene for verifying, do not accept fakers. On basis of this unique ability, it wont be deceived by others inactive photographs, puppets, or wax head.

4. Wide application fields
In addition to all current applications of fingerprint recognition, such as Time and Attendance, Access Control System . Face recognition also can be applied to all kinds of people face video surveillance alarm system,digital camera, and the future of robots, it has a broad market prospect.