A friend of mine had a great solution for people stealing his food out of the fridge at work. He kept his food safe by keeping a live badger tied to them at all times. This will actually put human evolution in reverse, because it will force us back into using techniques developed by our prehistoric ancestors. Someone in my office steals from the common fridge and so i spit in my sandwich and keep it in the fridge. So i can bask in the perverse joy of the pilferer chowing down my spit. Its alleviates the loss of the sandwich greatly.”]
Source: https://gizmodo.com/fridge-locker-secures-your-snacks-from-crappy-roommates-5400521