英文關鍵字
application
bar
barcode
business
buy
capture
cash
cashier
cashless
checkout
closeup
code
coding
commercial
concept
credit
customer
data
device
digital
display
easy
focus
hand
holding
information
internet
making
man
mobile
mobility
money
online
pay
paying
payment
phone
price
product
purchase
qrcode
reader
retail
scan
scanner
scanning
screen
selective
shop
smart
smartphone
store
tag
technology