20s
african american
app
apron
assistant
black
business
cafe
cashier
caucasian women
commerce
counter
coupon
customer
electronic
employee
enroll
female
indoors
inputting
job
mobile
notepad
online
order
people
person
phone
placing
pointofsaleterminal
pos
promotion
register
restaurant
rewards program
service
shop
smartphone
smiling
taking
terminal
touchscreen
transaction
two
using
waitress
woman
worker
working