Google will determine and store the location of any Wi-Fi access point whose SSID (name) does not end with "_nomap".
Thanks @email@example.com for the link.
@hans Unfortunately, when Google managed to convince the general public that they want to be watched, it wasn't by obtaining their informed consent first.
Use _optout_nomap to opt out from Google and Microsoft. https://social.technet.microsoft.com/wiki/contents/articles/32109.disabling-wifi-sense-by-gui-and-gpo-script.aspx
@fatuus I suppose it is up to debate whether data about a Wi-Fi access point count as "personal data".
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