機器
bank
banking
business
buy
card
cashier
cell
cellphone
checkout
commerce
communication
consumer
contact
contactless
contactless payment
credit
customer
device
digital
electronic
financial
hand
mobile
money
nfc
nfc technology
pay
paying
payment
person
phone
pos terminal
purchase
reader
retail
shop
smart
smartphone
store
technology
terminal
transaction
transfer
wallet
wireless