EntityQ5297200· pop 7· linked from 89 articlesdoor chainSign in to savesecurity device attached to a doorConnectionslockEntityInternational Standard Book NumberEntitydoorEntityWayback MachineEntitychainEntitysecurityEntitypasswordEntityclosed-circuit televisionEntityhingeEntityauthenticationEntitypadlockEntitykeychainEntityUnited States Department of CommerceEntitydoor handleEntitylatchEntityNational Institute of Standards and TechnologyEntityaccess controlEntityalarm deviceEntitysecurity alarmEntityMotion sensorEntityCategoriesChainsDoor furnitureLocks (security device)