While I’m not much of a woodworker, and I don’t even own a table saw, I did a double-take when I watched this video. Most new inventions are cruddy takes on a useless concept, but this one is pretty impressive in my opinion.  Both Taryn’s father and grandmother have lost either fingers or parts of fingers in woodworking accidents, and something like this would have been a godsend in those situations.  The video explains how it works, but the basic concept is “when it senses a finger, it stops”.  Watch the video and see how impressive it really is.