About 576,000 riders use city transit each day, and the wide release of Travel Wallet will be a major test for the SEPTA Key system's ability to handle the transactions and accounting that takes place with thousands of people boarding and disembarking from public transit. SEPTA intends for Key to replace all of its fare systems, and plans to stop selling monthly and weekly pass cards by late spring, Burnfield said. The agency has not yet decided when it will phase out tokens.