facelock noun2 •A type of headlock in which the opponent's head is clamped around the face.He raised his right arm and clamped a facelock on his opponent. — 1995 •A security protocol based on the attempted user's recognition of faces known to the account owner.This contrast can be used as the basis for a personalised ‘facelock’, in which authentication succeeds or fails based on image-invariant recognition of faces that are familiar to the account holder. — 2014 formsfacelocks
