The Littlest Bar in the Financial District is Massachusetts’ first to offer self-service beer, reports the Herald. Never have you ever seen such a high tech setup: patrons give their credit cards to the bartender, who turns on the table-mounted taps. After two beers, the system pauses and the bartender pops by to make sure no one is too inebriated to keep drinking. The Littlest Bar currently offers self-serve Smithwick’s and Guinness. Don’t worry — a bartender is available to show you how to pour the latter.