Presto card
As the Presto card is meant to replace paper transfers along with cash, tickets, tokens and paper passes, local transit operators have generally adopted the Presto card's transfer policies in their paper transfers (in the sense that, with the exception of the TTC and OC Transpo, all local transit operators accept each other's transfers, and will not reissue transfers originally issued by other local transit operators), except for a generally longer transfer window provided by the Presto card.