Technology to the rescue! Teen age drinking is a problem in Chapel Hill and elsewhere. Anti-drinking crusader Dale Pratt-Wilson is on the case and is featured as Tar Heel of the Week in the News and Observer (note: I was TotW back nearly 10 years ago. My being there had nothing to do with drinking.). Pratt-Wilson was a strong proponent of keg registration laws which if put in place would create stronger controls on kegs than on firearms. DPW makes sense on at least one point since more teens die in drinking related accidents than from gun shots. But as opponents point out, teens are not buying or drinking most of the beer. Immediate civil liberty questions come to mind. There was even a move to put RFIDs on kegs.
Leave it to the folks at Make Magazine. These technologists have gone several steps better with the kegbot kegerator. The Kegbot keeps up with all kinds of information including temperature, amount of beer remaining, etc but more importantly Kegbot keeps up with who is drinking how much using an iButton key. It can cut off heavy drinkers. And it does create an amusing way of measuring beer usage.