A December update of Microsoft Teams will now track and report your location using the local Wi-Fi network. This is a less intrusive way of tracking time spent in the office than asking people to badge in and out.

It’s off by default but IT admins can make its usage required.

https://www.tomsguide.com/computing/office-software/microsoft-teams-will-start-snitching-to-your-boss-when-youre-not-in-the-office-and-this-update-is-coming-in-december