機器
automatic
bus
card
caucasian
check
city
commuter
contactless
control
device
electronic
entrance
female
inside
interior
journey
line
man
metro
modern
passenger
pay
paying
payment
plastic
public
railway
reader
service
smart
smartphone
system
technology
terminal
ticket
train
tram
transport
transportation
travel
urban
validate
validating
validation
validator
vehicle
verification
woman
yellow