Combining the face tracking and off-axis projection in Unity3D, this app creates the illusion of depth on your phone screen.
Using Google’s ARCore library, the app uses face tracking to move the virtual camera for the off-axis projection. There is also a virtual spot light placed on the nose of the tracked face to enhance interaction.
The app is published in Google Play Store, and you can get it from here (for free): https://play.google.com/store/apps/details?id=com.kocosman.DepthIllusionDemoScenes
This project is open-source. If you’d like to see how it’s made check it out here: https://github.com/kocosman/DepthIllusionWithARCore