Data centers have strict entrance verification systems in place for users working in the center.
Depending on the center, the system may include multiple layers of user verification, such as pre-registration, identification with a driver's license, a card-based gate system, or a combination of biometrics and other methods.
The introduction of face recognition, in which the face is used as a password, is highly valuable as a contactless convenience as well as an identification system to deter unauthorized entrance by impersonators.