in VR scenario? how would people click on the screen?
Good Cardboard had a few different solutions to support input, but they were all very much off (like a small hole from the bottom to allow clicking on the screen). Daydream (deprecated, but did replace cardboard) did what we are doing - delay-based click based on gaze.
Of course - you can implement your own solution. The pointer selection would be a perfect starting point for that. But if I remember correctly we don’t have pointer input when using the gaze input.