Scientists at the Federal Institute of Technology of Lausanne (EPFL) have developed a technology to produce images by controlling the reflection of light passing through transparent materials. Sold by Rayform, it is intended primarily to the luxury sector, such as watches, perfumes, spirits or the fight against counterfeiting. A computer algorithm transforms, via software, a standard image in accurate 3D deformations. These redirect each beam. To make clear the shelves are more or less concentrated in one point, and the opposite to produce dark. Thus the images take shape in grayscale.