Smart TV Privacy: What 5,943 Tests Found in 2026

Smart TV privacy stopped being a vague worry this month and became something measured. A research team published the largest public audit so far of automatic content recognition, the feature built into most televisions that identifies what is on your screen. The finding that matters to American households is not that the feature exists, but that on several platforms the off switch did not stop everything it appears to promise.

Smart TV privacy study 2026: 12 televisions and 5,943 automated tests — Smart TV privacy: the scale of the 2026 ACR test run.

Here is what the researchers tested, what they actually found, and what it changes about the way you set up a television in 2026.

What the smart TV privacy study measured

The project, “Watching the Watchers: Privacy Analysis of U.S. Smart TV Automatic Content Recognition,” was carried out on real retail hardware rather than in simulation. According to the project’s own published summary, the scope was:

12 smart TVs from 10 manufacturers
8 operating systems, together covering roughly 95% of the U.S. smart TV market
10 viewing scenarios per television, including antenna broadcasts, streaming apps, HDMI-connected devices and screen mirroring
5,943 automated experiments, each run twice over: once with tracking enabled, once after opting out

That design is what makes this a smart TV privacy test rather than a smart TV privacy opinion. Instead of reading the settings menu and trusting it, the team watched the network traffic leaving each set and compared the two states.

What automatic content recognition does

Automatic content recognition, usually shortened to ACR, takes small samples of the audio or the picture on screen and matches them against a fingerprint database to work out what you are watching. The result feeds recommendations and, mainly, advertising measurement and targeting.

The part most owners do not expect is the reach. ACR sits at the level of the screen, not the app, so it can in principle recognise a broadcast arriving through an aerial or a picture coming from a games console or a streaming stick plugged into HDMI. That is precisely why smart TV privacy settings are worth understanding: they govern a layer underneath everything else you do with the television.

Where the opt-out worked

The study’s clearest good news is that on four of the eight platforms, turning the feature off genuinely stopped the traffic the researchers could attribute to it:

LG webOS
Sony Google TV (on the ACR-enabled set tested)
Supersonic VIDAA OS
Amazon Fire TV OS

If you own one of those, the smart TV privacy control in the settings menu did what it said on the devices and firmware versions tested.

Where the smart TV privacy opt-out fell short

On the remaining platforms the picture was less tidy. As summarised by the researchers and reported by CyberInsider:

Samsung Tizen: traffic matching the ACR pattern continued after opting out in 41 of 60 antenna runs, 18 of 30 HDMI runs and 6 of 30 runs of a built-in streaming app.
Vizio SmartCast: opting out produced no observable change in traffic to the identified ACR endpoint.
Roku OS: a partial result. The opt-out worked for antenna viewing on the Roku TV tested, but it does not cover Roku’s own streaming service.
TCL (Roku OS): traffic continued in 9 of 90 runs, and the set disclosed the streaming-service limitation in its settings screen.

One caveat deserves to be stated plainly, because the researchers state it themselves: almost all of this traffic is encrypted. They could identify where it went and that it correlated with what was playing, but not read its contents. The honest conclusion is that these opt-outs appear ineffective, not that collection has been proven to continue. It is also a snapshot of specific devices and firmware at the time of testing, and a manufacturer can change behaviour in an update.

Two findings that go beyond the settings menu

Two results in the paper are not about smart TV privacy toggles at all, and they are arguably the more serious ones.

On a VIDAA OS set, ACR data travelled unencrypted. The researchers also found that the server exposed detection results belonging to other televisions: in a three-hour window they received more than 57 million results. Checks in September 2026 confirmed that the unauthorised-access problem had been fixed, but that the transmissions themselves were still unencrypted.

Separately, Vizio’s free WatchFree+ service leaked programme and channel names through unencrypted DNS lookups and the server-name field of its connections. Anyone positioned to watch the home network’s traffic could reconstruct what was on, and the ACR setting made no difference to that.

What this means if you watch TV in the United States

Three practical conclusions follow from the data rather than from speculation.

Antenna and HDMI are the exposed paths. Every platform the team could analyse sent content-linked traffic during antenna viewing, and five of them did so during HDMI playback. Free over-the-air television is not the private option people assume.

The big apps were not tracked. No television in the study met the tracking threshold for Netflix or YouTube. Major apps appear to be excluded, most likely contractually.

The platform decides, not the brand. Two sets from different manufacturers running the same operating system behaved similarly, and the same brand can ship different platforms in different years.

A short checklist

Find the control. It is rarely called ACR: look for viewing information services, content recognition, personalised advertising or similar wording in privacy settings.
Read the wording carefully. TCL’s screen disclosed that the opt-out excludes the built-in streaming service; that kind of note is the useful part.
Install firmware updates, since several of the issues above were addressed by patches.
If you want the strongest smart TV privacy position available to you today, treat the television as a screen and do the watching on an external player you control.
Check advertising settings inside the individual apps as well, because they are separate from the set’s own control.

Smart TV privacy and how you choose to watch

The point of a study like this is not to make anyone afraid of their television. It is that the hardware you plug in, and the software you choose to run, now shape your smart TV privacy as much as the menus do. A set used mostly as a display, with the apps and the viewing happening on a device you picked deliberately, is a simpler thing to reason about than a television running eight services of its own.

If you are setting a television up from scratch and want to keep that structure, our smart TV setup guide e Fire TV Stick setup guide walk through the steps, and como usar IPTV covers the basics of getting a licensed service running on the device of your choice.

KenoIPTV is a paid IPTV service, and this article is reporting on independent research rather than reviewing our own product. If a subscription service fits how you watch, you can see what we offer on our plans page; if it does not, the checklist above is still worth ten minutes of your evening.