Alongside virtual reality (VR), which has a relatively high bar to entry due to hardware requirements and the effort to create virtual worlds, alternate reality (AR) and mixed reality (MR) also entered into the mainstream last year. Pokémon Go provided evidence that regular smartphones are sufficient to create compelling AR/MR experiences. Tango is a new hardware sensor technology for mobile phones that further enhances the possibilities for AR/MR on phones. It allows apps to acquire detailed 3-D measurements of the user's surroundings so that virtual objects can be placed and rendered more convincingly on the camera feed. The first phones with Tango technology are now available.