英文關鍵字
access
accessibility
adult
allow
authenticate
authentication
authorized
business
card
cardkey
caucasian
closed
code
control
door
electronic
enter
entrance
entry
hand
holding
holiday
home
hotel
house
identification
indoors
key
keycard
keyhole
light
male
man
modern
open
permit
privacy
protection
reader
room
safeguard
safety
secure
security
service
suit
system
technology
unlock
validation