[nategri]

What a CPU/GPU is up to at any given point is pretty abstract for most people, but they do notice battery life, which a miner would definitely affect. Even fairly non-technical mobile users can be extremely vigilant about battery consumption, so I think this approach is likely D.O.A. on that platform.

On a desktop however, it could be a game changer.

[Domine]

Currently my website does not activate miners if mobile browser is being used, still trying to reliably identify the laptop crowd though.

I am inclined to display a popup upon entry, telling user to disable script if they are on battery or unwilling to participate in mining. There really aren't a best practice for browser mining for now, but this is my approach for the time being.