You might be familiar with those optical-illusion toys that let you place a small object into a gadget with two parabolic mirrors and project what looks like a 3D version of that object. Now, there's a higher-tech version on Kickstarter that's designed to work with smartphones and tablets.
The Holho has some advantages over the toy. For starters, it can play video holograms. One version is a small pyramid-shaped gadget that sits on top or under the screen of a smartphone or tablet. Play a special video and it appears inside as a moving hologram.… Read more