英文關鍵字
banking
business
buy
cafe
card
cashier
caucasian
cell
cellphone
checkout
coffee
commerce
communication
consumer
consumerism
contactless
credit
customer
device
digital
electronic
field
hand
machine
man
mobile
mobilephone
money
nfc
pay
paying
payment
people
person
phone
pos
reader
retail
rfid
selling
shop
smart
smartphone
store
technology
terminal
transaction
transfer
wallet
wireless