Most "Smart" TVs use Automatic Content Recognition (ACR), essentially taking snapshots every 10+ms of what you watch and hear, then forwarding & selling that data to companies for ads, etc. I now feel it's only a matter of time before this "feature" finds its way to our ever "smarter" PC monitors.

LG with the help of Windows is already installing adware when the right Device ID is detected.

☑️ To disable ACR on TV: https://www.zdnet.com/home-and-office/home-entertainment/how-to-disable-acr-tv/