Virtual Reality and Mixed Reality will become the biggest technology disruptions since the smartphone, but most UX/UI design is still focused on flat, 2D screens. What do UX designers and engineers need to do to make the jump to spatial 3D? The futuristic, 3D interfaces of movies and video games are rarely functional in practice. And the tried-and-true rules of flat UX design often fail to translate into 3D. This talk explains the spatial UX/UI toolbox being created by pioneers in the space. We’ll take a look at what works, what doesn’t, why, and how you can apply these UX/UI principles to your own projects.