sentence: People buy paper magnetic stripe cards inside the station.
sentences_after: They insert this ticket into the gate, walk through the gate, and take the ticket out. After they have boarded and exited the train, they do the same thing to exit the station. Printed numbers on the card show how much money is left on the ticket.
concept_name: People
headings: Bay Area Rapid Transit
categories: Rail transport in the United States San Francisco Bay Area