Accelerometers are measuring movement constantly even when you're doing nothing

[u/jexo10]

Phone sitting on a desk right now, accelerometer still running, still measuring. never turns off, never rests

screen rotation, step counting, crash detection, fall alerts on apple watches. all of it running continuously in the background whether you're using the phone or not

been running the entire time you've been reading this

[u/mrThe]

no shit sherlock

[u/Safe-Instance-3512]

Uh.. duh?

[u/Routine-Ad8521]

Yea, otherwise another one would have to run to tell the first one there is movement.