Bangkok, Thailand - April 23, 2017: Passenger Is Walking Pass Through The Security Staff With Metal Detector Arch And Full Body Scanner Before Access To The Subway Station Under Anti-Terrorism Policy.

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access anti arch body check checkpoint concealed contraband control crime detect detector entrance entry explosive gate guard inspect inspection machine measure metal metro narcotics passenger people preventive protection quarantine risk safety scan scanner screen screening search secure security staff station subway system technology terrorism threat train transport travel traveler weapon