This Needs to be a Commercial Product

Now I'm not a beer snob...really...it's just that I know what I like and what I definitely do not like when it comes to beer. Since I don't drink a lot I am rather protective of the beer I do drink. If you've ever had a fridge half-filled with beer, but only a couple are ones you'd drink, you'd want a way to keep "your" beer safe.

This beer lock featured on Hackaday is the answer!