pins — a number assigned to an individual, used to establish identity in order to gain access to a computer system via an automatic teller machine, a point-of-sale terminal, or other device.
hooks — a curved or angular piece of metal or other hard substance for catching, pulling, holding, or suspending something.
latches — a device for holding a door, gate, or the like, closed, consisting basically of a bar falling or sliding into a catch, groove, hole, etc.