1. Uniqueness: everyone has a face, which cannot be copied or imitated, so it has higher security p>
2. Good naturalness: face recognition technology is the same as the biometrics used by human (or even other organisms) for individual recognition, and other biometrics such as fingerprint and iris do not have this feature p>
3. Simple and convenient: no need to carry a card, fast recognition speed, simple and convenient operation p>
4. Non contact: there is no need to contact the equipment and worry about the contact infection of the virus, which is both hygienic and safe p>