Knit hat stabs you in the head if you don't smile - Boing Boing
Knit hat stabs you in the head if you don't smile
Interactive designer Lauren McCarthy used Arduino to make a wooly torture device hat that she calls the Happiness Hat — it has sensors that detect when you're smiling — when you're not smiling, it sticks a metal spike into your head. Here's a short description from her web site:
via boingboing.net
I find this a little more than creepy - gives new meaning to put on a happy face- or else!
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