apple
asian
background
card
cashier
china
city
close
connection
contactless
device
digital
electronic
entrance
entry
gadget
gate
hand
holding
internet
metro
mobile
modern
money
mrt
nfc
open
passenger
pay
paying
phone
public
railway
reader
screen
service
shanghai
sign
smartphone
station
subway
technology
terminal
ticket
transport
transportation
travel
up
wallet
wireless