英文關鍵字
bankcard
banking
business
button
buy
buyer
card
cashier
check
checkout
checkup
chip
close
code
commerce
confirmation
control
counter
credit
customer
debit
entry
hand
installing
keypad
machine
money
paper
pay
paying
payment
pin
plastic
purchase
reader
removal
retail
salesman
seller
selling
shop
smart
store
technology
terminal
trading
typing
wireless