This design for a retractable doorknob provides extra security for your door by recessing into the doorframe when you leave the house, thereby preventing thieves from picking your lock (there are none). But if you want to get in, you use (we're assuming) the little slot below the knob to extend the knob out so you can…
After imagining he was inside a woman's restroom—something we've all done at one time or...sorry, where were we?—Simon Sassoon devised a gadget that automatically kills germs on public doorknobs. Want to see what two years and $250,000 worth of investment money gets you? That's it on the right.
At first glance, we thought these door handles made by supplier of door handles to yachts free:go were the same as the lighted door handles we've mentioned before, but no, these unusual knobs have a dual purpose: they're soft and elastic to the touch, and they also emit an allegedly pleasant aroma.