The system allows Seoul Subway to replace its paper tickets with RFID smart cards called Single Journey Tickets. Under the new ticket issuing scheme, automated vending machines issue the Single Journey Ticket in exchange for each passengers payment plus an additional deposit for the ticket. Each ticket contains STs SRT512 contactless memory chip, which has features that allow the cards to be returned and re-issued to new passengers. The ticket recycling scheme is expected to save the cost and environmental impact of generating an estimated 450 million printed paper tickets every year.
The SRT512 contactless memory chip is specifically designed for short-range applications meeting ISO 14443-B standards and that need re-usable tokens, such as access control, event ticketing and mass-transport ticketing applications. The device features a built-in anti-collision mechanism to prevent conflicts with other nearby cards; additionally, on-chip computation including dual counters and anti-tear properties enable a secure and physically robust solution.
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