A MetroCard that works like an E-ZPass, allowing transit riders to pass through turnstiles and board buses without any of that messy swiping, could be implemented within two years, says outgoing MTA CEO Elliot Sander. His last day is today (he resigned after Gov. Paterson vowed a "widespread cleanup and cleanout" of the MTA) and he's given some exit interviews defending his record ("trains are on time more often!") and previewing the "contactless" device the Authority wants to replace the MetroCard. Sensors on turnstiles or near bus entrances would detect a card or key-fob-like device and automatically deduct the fare from bank accounts. He says this would improve effeciancy by speeding up crowds of riders waiting to swipe their cards. Of course, the MTA has been considering this for years, and on some stations along the Lexington Avenue line, subway riders can wave a Citibank smart card or MasterCard debit key fob at turnstiles.