Stroke to unlock
posted Jan 12th 2010 9:32am by Mike Szczysfiled under: wearable hacks

If you’re into embedded clothing this stroke sensor is for you. As demonstrated in the video after the break, stroking the threads in a particular direction will create a circuit that senses and, in this case, turns on an LED. The concept uses two conductive buses on the back of a piece of neoprene. Conductive and non-conductive threads are then added for a furry or bristly finish. When stroked perpendicular to the power buses the conductive threads come together and form a circuit.
For some reason this just seems a bit creepy to us but perhaps that’s only because we haven’t come up with the right application for the technology. We’re pretty sure that a sweatshirt with an LED marquee and a “hairy” back that you stroke to illuminate is the wrong application.






It’d be simple enough to make this “omni-directional” — if you put a circle of conductors of one bus around a single cluster in the middle that was a different signal, stroking the middle cluster in any direction would result in a connection being made.
Very, very weird sort of input, though, and I can’t honestly think of a use for it myself. Interesting nonetheless.