ELI5: how do mobile devices know your movements?

I’m primarily talking about stuff like step counters, but also health apps measuring your heart rate, how many stairs you take, the length of your steps, and so on. I’m honest when you tell me to explain it to me like I’m five years old, this one boggles my mind.

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@Crackhappy
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13•1 month ago
I actually really like this kind of tech that is focused on health and safety. I just wish it weren’t also reporting all this shit to corporate overlords.

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