The Kegbot we saw was hooked up to a run-of-the-mill single-tap Haier kegerator, and used a Motorola Xoom tablet for its interface. Wakerly says you could create the system using any cheap, knockoff Android tablet as long as it supports USB-host mode, or any kegerator (including one you've put together yourself).
Once you've gotten everything connected, everyone drinking from your keg will need their own Kegbot account. Creating an account is a simple process that involves typing in an email address and selecting a password, as well as taking a keg-side mug shot. Before each pour, you tap "Beer Me" on the tablet's home screen and then select that undoubtedly sexy photo to identify yourself. The tablet can even take an action shot as your face lights up in the presence of fermented barley and hops, while ticking off the exact number of alcoholic ounces filling your mug (or chalice). You can also set the keg up to tweet as drinks are poured, or even check in brews to Untappd.
Drinks are grouped into sessions, so you can see how much you and the guys really consumed while watching the game, or how many sessions it takes to kill a keg. Brews are also broken down by person, so you can prove (in pie-graph form, no less) Brad had only half as much to drink as everyone else when he decided to profess his undying love to your neighbor.