英文關鍵字
access
admittance
apartment
authentication
button
close
closed
code
coded
coding
combination
device
door
doorlock
doorway
electric
electrical
electronic
enter
entrance
entry
equipment
exit
finger
fingers
gray
grey
home
identification
key
keypad
lock
number
open
pad
pass
passkey
password
press
privacy
protection
safe
safety
secure
security
system
touching
unlocking