Comment by TheRealHB

My guess is that may be working more like a simple "maestro" telling your brain orchestra and heart drummer to reduce the speed from Heavy metal to Ballad and that somehow makes easy to focus in what's in front of you?

I make no claims here, I did it for me and looks like it works, not scientifically based or proven, not even tested on more than 1. So, no idea if can or will work for you ; )

That said, I'm now curious with so many comments to see how it will perform for those building versions to test. Its a 20min project, free for those already with prototyping board around.

The key for me was to remove to my marginal angle of vision, not on the screen (like an app), the moment I moved outside and wasn't in front of it it work best. If you see it directly it does distract you indeed.