Google quietly ties your phone number to all your signed-in accounts

Google appears to be linking phone numbers to all active Google accounts on a single device, without any notification or alert to the user. This discovery was made by a Reddit user who noticed that Google Play Services is verifying phone numbers and connecting them to any Google accounts on the same device. While on the surface this may seem innocuous, it raises serious privacy concerns.

For instance, if a person maintains separate accounts for personal, work, and anonymous use on their phone, Google's automatic linking of phone numbers across these accounts could potentially tie them together in an unauthorized manner. To rectify this, users can disable automatic number syncing in Google's Privacy & security settings and manually remove any unwanted phone numbers from their Google account's Personal info section.

This process must be repeated for all Google accounts associated with the device. Despite the prevalence of data collection practices by tech giants, the Reddit user finds such revelations unsurprising in the current digital age.