機器
bank
banking
banknote
bill
business
card
cash
cashless
check
commercial
consumerism
credit
currency
debit
device
dollar
economic
electronic
equipment
expense
finance
financial
hundred
keyboard
magnetic
merchant
money
number
paying
payment
pin
plastic
purchase
reader
retail
safety
sale
sell
shopping
smart
strip
stripe
technology
terminal
transaction
transfer
usa
white