The GTMs allows the passenger to top-up stored value cards, . Passengers can also purchase a standard ticket in cash (coins and notes), obtain a refund on their standard ticket deposit, check the value remaining in their EZ-Link Cards and view their past card transactions. GTMs by Cubic had been installed on all North South and East West line stations since 2002, and Circle line stations since their opening; and by Ascom, on all North East line stations since their opening. Using these machines, to buy a standard ticket, passengers selected a destination station on a touch sensitive rail map, and the fare was automatically calculated. Payment for standard tickets was in cash (coins and notes). Passengers could also top-up their EZ-Link or NETS FlashPay cards by placing it on an external reader, and topping up through NETS.