The number of start-ups who are trying to abstract the "payment' from the dining experience seems to grow week by week. Pymnts profiles a handful of US players here.
the emerging startups that are attempting to disrupt the restaurant space by removing the friction from restaurant payments by enabling pay at the table, check splitting and a variety of other ways to pay using a mobile device and an app when dining out.
http://www.pymnts.com/in-depth/2015/the-buffet-of-mobile-dining-payment-startups/#.VW5Tg89Vikq