機器
bank
banking
business
buy
card
cash
cashless
checkout
commerce
confirm
confirmation
contactless
credit
credit card
customer
device
digital
exchange
finance
internet
mobile
money
network
nfc
pay
paying
payment
payment terminal
person
phone
pos
pos terminal
processing
purchase
receipt
retail
sale
shop
shopping
smartphone
store
successful
technology
terminal
trade
transaction
wireless