In many humorous cartoons we have saw paranoid people who lock their doors to a dozen locks but that usually doesn’t stop their pursuers. The door chain which in theory doesn’t allow to open the door for a stranger. Although this stranger could stick his hand into the hole and unfasten the chain. Defendius is a system that can protect the stranger or you from opening the door fast. To open it a person need to carry the chain though a maze. It’s quite boring to do each time but what you won’t do for your own safety, right? Besides you’ll learn how to go through the maze very fast.
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