If you've always wanted an impossible to open door chain, then check out the "Defendius" by Art Lebedev. This contraption is literally a maze gone wrong. Click here for one more picture.
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?[via engadget - Artlebedev]
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[Source: Tech Blog]
