機器
bill
business
buy
cafe
cafeteria
cashier
cashless
cell
checkout
code
coffee
connection
credit
customer
device
digital
female
financial
food
grocery store
hand
indoors
mobile
money
nfc
online
pay
paying
payment
people
person
phone
purchase
qr code
reader
restaurant
retail
scan
scanning
service
shop
smart
smartphone
store
technology
transaction
transfer
wireless
woman