英文關鍵字
access
accessibility
accommodation
apartment
authentication
authority
authorized
business
card
close
code
control
door
electronic
enter
entrance
entry
equipment
hand
holding
home
hotel
house
identification
indoors
inserting
key
keycard
keyhole
lock
modern
office
open
pass
plastic
privacy
protect
protection
room
safe
safety
secure
security
service
system
technology
unlock
validation
woman