Re:I've never heard of this before. (Score 1)

[...] If this is truly novel, nice job!

I don't know if fiction counts, but the armored helmets of the EVA suits in Planetes had this. With the visor of the helmet down, a display panel would be directly in front of the user's face; cameras mounted on the helmet would then feed images to that display, upon which a GUI (controllable by tapping on the exterior of the visor) was superimposed.

Still, it's nice to see someone demonstrating a real working artifact.