Art Lebedev's Defendius. Because unlocking doors is just a little too easy

Sure there's plenty options out there for those that want quick and easy security measures for their doors, but what about those that like to make everyday activities a challenge? Thankfully, the geniuses at Art Lebedev studios have now come up with a solution in the form of the Defendius door chain, but you better act fast -- we hear it's available for today only.