機器
bank
banking
business
buy
calculator
card
cash
cellphone
checkout
commerce
concept
connection
consumerism
credit
customer
device
digital
electronic
finance
financial
hand
man
mobile
modern
money
nfc
online
pay
paying
payment
payments
person
phone
pos
purchase
retail
rfid
screen
shop
smart
smartphone
store
technology
telephone
terminal
transaction
wallet
wireless
woman