Granted, we've come across hordes of patent applications that were far from practical, but if it's the premise that counts, we suppose this one works out alright. The app calls for a "probe" which could then be inserted into a drink, and an indicator connected to a database that would enlighten you if your drink has indeed been injected with a noxious solution while you weren't paying attention. The process would also require that a blast of electricity be sent through the probe, and though it's not directly stated, it also entails that the user be sober enough to understand it and willing to bust it out whilst partying. We have our doubts about the last two ever truly working out.
[Via MedLaunches, image courtesy of BBC]