facelock

Etymology
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Noun

 * 1)  A type of headlock in which the opponent's head is clamped around the face.
 * 2) A security protocol based on the attempted user's recognition of faces known to the account owner.
 * 1) A security protocol based on the attempted user's recognition of faces known to the account owner.
 * 1) A security protocol based on the attempted user's recognition of faces known to the account owner.
 * 1) A security protocol based on the attempted user's recognition of faces known to the account owner.