英文關鍵字
access
accessibility
authenticate
authentication
authority
authorized
burglar
card
cardkey
closed
code
control
door
electronic
enter
entrance
entry
hand
home
hotel
identification
indoors
inserting
intruder
key
keycard
keycode
keyhole
keyless
lock
modern
open
plastic
precaution
privacy
protect
protection
room
safeguard
safety
secure
security
service
system
technology
unlock