英文關鍵字
access
accessibility
arrival
arriving
authenticate
authentication
authority
authorization
authorized
burglar
business
card
cardkey
closed
code
control
corporation
corridor
decode
device
digital
door
electronic
enter
entrance
entry
equipment
finger
guest
hall
hand
holding
holiday
hotel
house
identification
identity
indoors
inserting
intruder
key
keyboard
keycard
keycode
likeable
lock
male
man
modern
number
office
open
pass
passage
password
plastic
precaution
privacy
protect
protection
room
safeguard
safety
secure
security
sensor
service
standing
suit
suite
system
technology
travel
trip
unlock
vacation
validation