Vizio is reportedly working on a way to let TV owners know when it spies on their viewing habits. According to The Verge, the company is developing a "notice program with direct notification to the class through Vizio Smart TV displays." The Hollywood Reporter first spotted the news. From the report:

The news popped up in a request to extend the time needed to submit a motion for a preliminary settlement in a class action lawsuit against the company. So basically, it's possible that Vizio users will get a pop-up notification that explains what the company is doing and when. The TV company already previously settled with the Federal Trade Commission for $2.2 million in 2017, along with the agreement to get users' consent before collecting data. The company was caught in 2015 tracking users' viewing habits and demographic data, which it combined to then sell to analytics and ad companies, thereby allowing them to better target their messaging.
While we run out and throw money at those who would sell data in order to abuse us. No $#@!s were given.