機器
bank
banking
bill
business
buy
buying
cafe
card
checkout
close
commerce
commercial
computer
consumerism
contactless
credit
customer
electronic
finance
financial
hand
hands
holding
home
internet
laptop
market
money
nfc
online
ordering
pay
paying
payment
people
purchase
restaurant
retail
sale
security
service
shop
shopping
store
technology
terminal
transaction
typing
wireless