The system used machine learning to predict health-related outcomes in anonymous health datasets.

It was possible but more difficult to discover metrics like BMI, blood oxygen, and age.

Health data thats discovered by AI could potentially be used to discriminate, observers say.

A person checking their smartwatch in the city.

Guido Mieth / Getty Images

“Read the license agreements of the apps you use and your watch.

If you cant find one, thats really bad,” Schrader said.

Most people inadvertently waive protections when they set up gadget software and ‘accept’ the terms of service.

A person looking at a smartwatch with health information displayed in an infographic.

Todor Tsvetkov / Getty Images

Also, turn off location tracking.

Up to five data points tied to a location provide enough information to identify someone."

You might want to think carefully the next time you strap on your smartwatch.

The data its collecting could end up in more places than you expect.