Female undergraduates at a top Chinese university can now use their face to open doors. The Beijing Normal University installed two facial recognition devices at entrances to the No. 13 female dorms in early May this year, according to state-run Beijing News.
The system — which has been on trial for nearly three weeks — is meant to deter intruders from entering the dorms through tailgating, say campus staff. If the system does not recognise a face, it will alert security.

Source: How a university campus is using facial recognition to keep its dorms safe