Please do NOT send us photo's which don't belong to you. Any photo's copied from Google Images will be removed.
This liquid crystal sheet is so sensitive that it can detect the heat print your hand leaves behind! Place your hand on a book for a few seconds, then remove your hand and place the liquid crystal sheet over the spot where your hand was located. Observe as the liquid crystal changes color and makes visible your hand's heat print. Or, simply touch the material and observe the print left by the heat of your hand. Can be used over and over. The material has a stick back and can be easily cut with scissors. 25-30oC Transition (77-86oF). Available as 4" x 4" square or 12" x 12" square.