英文關鍵字
access
alarm
authorize
bank
banking
box
business
cash
cipher
code
combination
concept
control
denied
dial
door
electric
entrance
error
finance
hack
hacker
hand
home
insert
key
keyboard
keypad
lock
money
number
numeral
numeric
numerical
pin
press
prevent
protect
protection
safe
safety
save
secret
secure
security
thief
try
vault
wrong