Try switching off automatic content recognition on smart TVs

Lots of the latest smart TVs include automatic content recognition (ACR), which studies everything you view on the device – whether it’s streamed over the internet, cable, or via broadcast television – and uploads this information to a server for use in a recommendation engine. To guard your privacy, turn off this setting; its name varies by model, so simply search for ACR (TV brand) for instructions to deactivate it.