Toronto

You mean 'meet the requirements of the existing fare structure?' They had to change the fare structure because Presto had problems there too, being unable to determine if they are on a transfer or a second journey (and after implementation, also didn't process transfers right anyhow).

Mind you, the new fare structure is better for the rider (you can theoretically get a return trip for free for short jaunts). So, another Presto failure is celebrated...