Smart TVs running operating systems from Samsung, Vizio, and Roku continue sending data to automatic content recognition (ACR) endpoints after users opt out of tracking in the devices’ settings, according to research published on Monday. The paper from Northeastern University researchers points to potential privacy violations from some of the biggest TV brands.

ACR captures video screenshots or audio clips from smart TVs and sends the data to remote servers, where it's used for things like measuring content viewership and serving targeted ads.

The paper, "Watching the Watchers: Privacy Analysis of US Smart TV Automatic Content Recognition," examined eight smart TV OSes across 12 smart TVs from 10 manufacturers (Amazon, Hisense, LG, Roku, Samsung, Sony, Supersonic, TCL, Vizio, and Westinghouse) to examine when smart TVs use ACR and how effective opting out of user tracking is.

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Plex, which made a name for itself by letting users share movies they own, is now helping sell movie theater tickets. The company is looking to monetize its content-discovery capabilities and expand its business beyond its media server software.

Plex partnered with Fandango, which has sold movie tickets since 2000, to drive ticket sales from people searching for movies to stream. Per the announcement:

Starting today, Plex users in the US will see a Fandango ticketing option on title pages for movies currently playing in theaters, allowing them to click through to Fandango to find showtimes and purchase tickets. The integration also enables direct attribution through Kochava, giving studios and advertisers greater visibility into how campaigns and audience engagement translate into ticket sales.

Fandango says it sells tickets for 31,000 movie theater screens in the US. The Plex deal allows it to leverage data from Plex’s streaming service (Plex claims users of the service “make more than 100 million streaming decisions each month”), including "ratings and cross-platform viewing" to gain “insight into audience intent," the announcement said.

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