Owners of hotels read this:

The Doorknob Condition uses an innovated pulley system that makes the knob on the exterior recess inwards when pulled from the inside. Without a knob to use, there’s no way to get it.

You got it? Good! Now I want to see it in action when I’ll go in my next trip.

Smart Doorknob



VIA OhGizmo!

PCNews Verdict: 8/10 Interesting idea but not enough for your security.

Bronse Award

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