Many people realize that smartphones track their locations. But what if you actively turn off location services, haven’t used any apps, and haven’t even inserted a carrier SIM card?

Even if you take all of those precautions, phones running Android software gather data about your location and send it back to Google when they’re connected to the internet, a Quartz investigation has revealed.

Since the beginning of 2017, Android phones have been collecting the addresses of nearby cellular towers—even when location services are disabled—and sending that data back to Google. The result is that Google, the unit of Alphabet behind Android, has access to data about individuals’ locations and their movements that go far beyond a reasonable consumer expectation of privacy.

Quartz observed the data collection occur and contacted Google, which confirmed the practice.

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The practice is troubling for people who’d prefer they weren’t tracked, especially for those such as law-enforcement officials or victims of domestic abuse who turn off location services thinking they’re fully concealing their whereabouts. Although the data sent to Google is encrypted, it could potentially be sent to a third party if the phone had been compromised with spyware or other methods of hacking. Each phone has a unique ID number, with which the location data can be associated.

The revelation comes as Google and other internet companies are under fire from lawmakers and regulators, including for the extent to which they vacuum up data about users. Such personal data, ranging from users’ political views to their purchase histories to their locations, are foundational to the business successes of companies like Facebook and Alphabet, built on targeted advertising and personalization and together valued at over $1.2 trillion by investors.

Clearly the solution to Google cyber-stalking us is to eliminate regulatory oversight.  That way the market will solve everything.