Smart TVs take snapshots of what you watch multiple times per second

Popular smart TV models can take multiple snapshots of what you are watching every second or upload audio snippets of viewed content – possibly even when they are being used as external displays for your laptop or video game console.

Smart TV manufacturers use these frequent screenshots or audio clips in their automatic content recognition systems, which track viewing habits in order to target people with specific advertising. But researchers showed this tracking by some of the world’s most popular smart TV brands – Samsung TVs can take screenshots every 500 milliseconds and…