機器
access
accessibility
asian
automatic
barrier
building
businessman
card
check
city
control
daily
design
door
enter
entrance
entry
equipment
exit
gate
hand
male
man
metro
modern
office
officer
opener
pass
people
public
routine
scan
scanning
security
sensor
sign
smart
station
subway
technology
ticket
touching
train
transport
transportation
underground
urban
using