Google Daydream Controller Emulator Cover for Galaxy S4

This is a cover that clips on to a Samsung Galaxy S4 phone, when you want to use it as a Daydream controller emulator.

https://developers.google.com/vr/daydream/controller-emulator

The controller emulator software provides you with a virtual touchpad and virtual buttons on the screen of a secondary phone. Unfortunately, if you are actually using your phone in a headset for Daydream, you can't actually see the screen of this secondary phone; this makes it hard to find the outlines of the to