A few years ago the Federal Trade Commission caught Vizio doing something most people never imagined their television could do: it was watching them back. Software on 11 million TVs quietly logged what was on screen, second by second, and shipped it off to be sold. I went looking for the same feature on my own TV. It was there, it was on, and almost nobody is told it exists.

What ACR actually is

It's called Automatic Content Recognition — ACR — and it works like Shazam for your screen. Every few seconds your TV grabs a snapshot of whatever you're watching, turns it into a digital fingerprint, and sends that fingerprint to a server to be matched. It doesn't care where the picture comes from: cable, a streaming app, a disc, your game console, a laptop plugged into the HDMI port. If it's on the screen, it can be logged.

Matched against a giant library, that fingerprint becomes a record of everything you watch — and, stitched to what the TV maker already knows about you, a profile that gets sold to advertisers.

Why your gut is right — the receipts

This isn't theoretical. In 2017 the FTC and the New Jersey Attorney General settled with Vizio for $2.2 million. The company had turned ACR on by default across 11 million TVs, tracked viewing second by second — more than 100 billion data points a day — appended details like age, sex, income, marital status, and home value, and sold it to third parties, all without telling people. (Vizio later paid more to settle a separate class action.)

And it isn't only an old story. In 2026, Samsung settled with the Texas Attorney General and agreed to stop collecting ACR data from Texans without clear, informed consent. Everywhere else, the practice is still the industry standard.

The catch: on by default, behind a friendly name

Every major platform ships ACR enabled, buried under a label that sounds like a feature you'd want:

  • Samsung → "Viewing Information Services"
  • LG → "Live Plus"
  • Sony → "Samba Interactive TV"
  • Vizio → "Viewing Data"
  • Roku → "Use Info from TV Inputs"

Turn it off (menu paths vary by model year)

  • Samsung: All Settings → Terms & Privacy (or Support) → turn off Viewing Information Services.
  • LG: All Settings → General → System → Additional Settings → turn off Live Plus.
  • Vizio: Menu → System → Reset & Admin → turn off Viewing Data.
  • Roku: Settings → Privacy → Smart TV Experience → uncheck Use Info from TV Inputs.
  • Sony / other Google TVs: Settings → find Samba Interactive TV and disable it.

If your menu doesn't match exactly, search your TV's settings for "viewing," "privacy," or the brand name above — the toggle is in there.

The part the toggle doesn't fix

Two honest caveats. First, firmware updates have a habit of switching these back on — re-check after your TV updates. Second, even with every toggle off, a smart TV often keeps reaching out to servers the settings don't control.

That's where the same move from the last two installments earns its keep: block the TV at the network. A DNS filter like NextDNS or Pi-hole cuts off the tracking and ad domains your TV phones home to — for every device at once — and it holds even when a setting silently flips back. The most private smart TV is one that never reaches the internet at all; short of that, the toggle plus a network block gets you most of the way there.

Do it yourself (about 5 minutes)

  1. Open your TV's settings and find the ACR toggle for your brand (names above).
  2. Turn it off.
  3. While you're there, switch off any "interest-based ads" or ad-personalization setting too.
  4. Re-check after the next firmware update.
  5. Best of all: add a DNS filter at your router so the TV can't phone home even when it tries.

You bought a screen. You didn't agree to become the thing it measures. The fix is five minutes and one buried switch they were betting you'd never look for.

Receipts: FTC, "VIZIO to Pay $2.2 Million to FTC, State of New Jersey… Collected Viewing Histories on 11 Million Smart Televisions" (Feb 2017) and the FTC business blog "What Vizio was doing behind the TV screen"; Consumer Reports and Malwarebytes on ACR and the per-brand opt-out names; reporting on Samsung's 2026 Texas AG settlement. Menu paths reflect 2025–2026 models and can differ by year. Spotted an error? editor@thebluf.news