機器
adult
banking
bill
business
buy
card
cashier
cellphone
checkout
commerce
communication
consumerism
contact
contactless
counter
credit
customer
device
digital
electronic
financial
hand
holding
mobile
money
nfc
pay
paying
payment
phone
pos
reader
retail
selling
service
shop
smart
smartphone
store
technology
terminal
transaction
transfer
wallet
wireless
worker