EntityQ6398242· pop 7· linked from 147 articleskeycard lockSign in to savelock operated by a keycardConnectionslockEntitydead boltEntitymobile phoneEntitydoorEntityhotelEntityWayback MachineEntityintegrated circuitEntitycredit cardEntityprivacyEntitylight-emitting diodeEntitybarcodeEntitypasswordEntitybiometricsEntityfingerprintEntityradio-frequency identificationEntityclosed-circuit televisionEntityhingeEntityidentity documentEntityauthenticationEntitynear-field communicationEntityCategoriesDoorsLocksmithingLocks (security device)