英文關鍵字
card
pos
pin
credit
password
payment
security
retail
transaction
business
terminal
consumerism
pay
store
debit
customer
finance
sale
cashier
restaurant
market
bank
technology
purchase
wireless
electronic
buy
money
shop
digital
reader
checkout
service
bill
counter
cash
supermarket
bar
cafe
commercial
code
transfer
client
enter
keyboard
number
finger
chip