The MTA showed off its new tap-based payment system, known as OMNY, at a board meeting in Lower Manhattan Wednesday. The system, short for One Metro New York, will eventually replace the MetroCard and will allow riders to pay with a fare card linked to a bank account, a mobile wallet payment, or the MTA app. The system will allow riders to tap their way into the subway system, and it is scheduled to debut at 16 subway stations along the 4, 5 and 6 lines in Manhattan and Brooklyn, as well as all Staten Island buses, by the end of May.