app
bar
bar code
barcode
business
buying
cashier
cell
cellphone
client
code
commercial
communication
concept
customer
data
display
electronic
food
hand
holding
identification
information
internet
label
mobile
mobile phone
number
payment
people
person
phone
price
product
reader
retail
sale
scan
scanner
scanning
selection
service
shop
shopping
smart
smartphone
store
supermarket
taking
technology