Dolby knows what you're watching based on your breath
 

If you thought it was creepy that technology lets networks know what you're watching, you'd better sit down. It turns out that Poppy Crum, chief scientist at Dolby Labs, has been researching how our bodies and emotions react to what we see and hear....

https://www.engadget.com/2018/01/12/...sed-on-your-b/