Light Card is the most technologically advanced manifestation of a spectator card using a flashlight from your phone and just one touch. This trick looks like a video montage and your viewers will enjoy special effects in real life! The secret of focus is hidden in your own hand movements, because modern technology should make your life easier. I clicked on a button and received waves of emotions from the viewer. This innovative device is hidden inside a regular deck of Bicycle cards, but it can be used with any card shirt design. The device can be charged via regular USB and one charge is enough to show focus more than 200 times .