The Paris event was powered by a technology called 3D Holonet, created by a company called Kaleida. Essentially, it’s high-tech metal gauze, which can be stretched out in a translucent screen where you can project holograms and other 3D effects. (It’s the same technology that allowed deceased artists like Michael Jackson and Tupac to posthumously “perform” at events.) “The Holonet allows us to do different types of effects that weren’t necessarily possible with augmented reality,” explains Mackasek.