Why are websites requesting access to motion sensors... on my desktop?

I was checking the status of a FedEx order when Brave warned me that “this site has been blocked from accessing your motion sensors”. I’m struggling to understand why a website would need that access. Do I get a different experience if I drop my device? Tip my monitor over? Spin the mouse around?

  Dec 30, 2019 (rev. Sep 16, 2025) ·  11 min