A latch mechanism includes a claw rotatable between a latched position and an unlatched position, and an actuator motor. Detection and removal are performed according to one or more document cleansing policies, which specify the types of sensitive or hidden information to detect and remove, for example, confidential information, financial data, profanity, and the like. The shaft is configured to receive a screw having a screw-head so that the screw is countersunk.