It won't stop you from overdrinking, but Rotgutonix will test unmixed drinks (or those mixed with water) for the presence of unadulterated alcohol (rotgut). The concept has a chemical sensor which can detect several alcoholic brands in about 20 seconds.
At present, the device is set to analyse the following brands: Johnny Walker, JB, DYC, Pampero, Brugal and Havana club, although in future version we expect that Rotgutonix will be able to analyse the chemical composition of over 20 well-known brands, mainly rum, whisky, gin, and vodka.
The site says the device is currently "a prototype still in the marketing phase", but don't worry, we'll be watching this one closely. And as a fun side note: it's designed by the guy who gave the world the condometric (a condom with a ruler stenciled on it) and the ball and chain student study aid (with built-in unlocking timer). Right then! [Curiosite via Technabob]