EntityQ374776· pop 6· linked from 94 articleswarded lockSign in to savetype of key lockConnectionslockEntityMiddle AgesEntityInternational Standard Book NumberEntityAncient RomeEntitydoorEntityhistory of ChinaEntitycylinderEntitypasswordEntityclosed-circuit televisionEntityhingeEntityauthenticationEntitypadlockEntitykeychainEntitylatchEntitydoor handleEntityaccess controlEntityalarm deviceEntitysecurity alarmEntityMotion sensorEntitypressure switchEntityCategoriesLocks (security device)