iOS health app could track this like steps. Total distance scrolled on your phone.

mrunseen 2 hours ago | parent | next [-]

There was a iOS jailbreak tweak called Treadmill where it exactly done that. Pretty cool to me.

	▲	dolin_ch an hour ago \| parent [-]
		I didn't know that, thank you for the information and for your feedback

dolin_ch an hour ago | parent | prev [-]

Ahahah, that would be an excellent idea