[TeMPOraL]

> What we need, and will probably get soon, is inertial guidance based on laser ring or fibre optic gyros in mobiles.

Isn't this precisely how accelerometers/gyros in mobiles work?

[05]

https://en.wikipedia.org/wiki/Microelectromechanical_systems

[TeMPOraL]

Thanks! I didn't know about those.

For some reason I was convinced phone gyros use light interference in a spiral of optic fiber. Probably because I read about that design when I was looking how solid-state gyros in RC models work.