‘I can tell when you’re sad, I can see that you’re fat’: Amazon Halo your new blunt best friend?

San Francisco: Amazon on Thursday unveiled a wristband that goes beyond simply tracking activity to gauging how happy a person is by the sound of their voice.

Amazon Halo combines data gathered by a sensor-packed wristband with artificial intelligence tools to provide wearers with feedback regarding their physical and mental health, the internet titan said.

Amazon might already know what books you like and how often you need toilet paper, but the fitness tracker may give the company a wealth of new information about its customers, although Amazon says it won’t use the for marketing or advertisements or to sell you stuff.

“Despite the rise in digital health services and devices over the last decade, we have not seen a corresponding improvement in population health in the US,” Amazon Halo’s principal medical officer Dr Maulik Majmudar said in a release.