Defendius Door Chain

This door chain concept designed by Artemy Lebedev fell into the category of a good joke. If you have a visitor you might have a dialog like this : “I’ll be right there, hold on!“, just for a seconds …  “Just one more minute, I’ve almost got it!“, because the chain is long enough to reach the far end of the maze. Someone thinksit would help you protect your home against unauthorized entry., but I just contribute it as a time challenge!