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Pi-hole can block selected smart-TV domain requests when the TV uses Pi-hole for DNS. It cannot switch off a TV’s optional viewing recognition, voice, location, or personalization settings, and it does not inspect or block every connection. To reduce data collection, change the TV’s privacy controls, review app permissions, and use Pi-hole as an additional filter—then check that the TV still works as expected.
What Pi-hole can—and can’t—do
Pi-hole is a DNS sinkhole: it blocks requests to selected domains for devices that send their DNS lookups through it. Its documentation specifically identifies smart TVs as devices it can help filter. That makes it useful for blocking some tracking or advertising domains across a compatible home network, without installing software on the TV. Pi-hole’s overview explains its role.
DNS filtering is not the same as inspecting all network traffic. Pi-hole does not change a privacy setting inside the TV, establish that every connection is covered, or guarantee that a blocklist catches every tracker. DNS-based filtering can also be limited by how a device and network are configured; the documentation does not establish that every smart-TV model behaves the same way. Pi-hole’s configuration documentation describes DNS blocking, but should not be read as proof that all encrypted DNS or direct-IP connections are prevented.
Turn off optional collection on the TV
Viewing recognition and personalization
Start with the TV’s own privacy controls. Samsung says Automatic Content Recognition (ACR) is optional on supported Smart TVs and runs only when a user opts into its Viewing Information Services notice. Samsung describes the information involved as including viewing history, a Personalized Service ID, and IP address when the feature is enabled. Its support page explains that users can change the setting: Samsung’s ACR guidance.
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There is no reliable universal menu path: labels and locations vary by model, region, and firmware. Look in the TV’s privacy, terms, or viewing-information settings, and check the support instructions for the exact model. Turning off ACR or one personalization control does not establish that all other data collection has stopped.
Other data categories and voice features
Review data categories separately rather than treating “personalization” as one master switch. Samsung’s privacy notice separately describes information that third-party applications and content providers may receive, including IP addresses and device identifiers. Samsung’s privacy notice explains those practices.
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Google TV documentation lists watch activity, app interactions, installed apps, diagnostics, device IDs, and approximate location among information used by its services. Google provides a location setting; the exact options depend on the device and service. Google TV’s privacy information describes the data categories and controls.
On some non-Android TV devices with Google Assistant, information sharing with the TV manufacturer is a separate control. Disabling it also stops Assistant and manufacturer voice services on those devices, so consider that functional tradeoff before changing it. Google’s Assistant information-sharing guidance covers this control.
Use Pi-hole as a second layer
- Route DNS through Pi-hole. Where the router allows it, set the household’s DNS server to Pi-hole. If the router cannot set DNS, Pi-hole’s setup guidance describes using Pi-hole’s DHCP server or configuring clients manually. Follow the instructions for your network rather than assuming every router has the same controls. Pi-hole’s project documentation outlines the options.
- Check what the TV requests. Use Pi-hole’s query log to see which domains the TV asks to resolve and which are blocked. A domain appearing in a log is not, by itself, proof of what data was sent or why it was requested.
- Test TV functions after blocking. If an app, guide, voice function, or other feature fails, identify the relevant blocked domain before deciding whether to allow it. Allow a domain only when there is a concrete failure and you accept the privacy tradeoff; broad allowlisting can undo filtering.
- Choose a query-log privacy level. Pi-hole offers privacy levels, including an anonymous mode that disables query-log and long-term database logging. That reduces the detail available to the local DNS administrator and household, but also makes troubleshooting less informative. Pi-hole’s privacy-level documentation explains the options.
Review app and streaming-service permissions
TV privacy settings do not necessarily govern the apps installed on the TV. Review permissions and privacy choices in individual streaming apps and services as well as on the device. The FTC recommends reviewing privacy settings and permissions on connected TVs and streaming devices, and cautions that ad blockers do not necessarily block all ads or tracking. FTC consumer guidance offers advice for connected-TV users.
Which layer addresses which problem?
| Layer | What it can address | Limit or tradeoff |
|---|---|---|
| TV privacy settings | Optional ACR, viewing-information, location, personalization, or voice-sharing controls when the model offers them. | Controls and labels vary. Disabling one category does not show that all collection has stopped. |
| Pi-hole DNS filtering | Selected domain lookups from devices that use Pi-hole for DNS, including compatible smart TVs. | It filters at the DNS layer, not all TV traffic. Blocking can disrupt useful functions. |
| App and service settings | Permissions and data choices exposed by individual apps and streaming services. | Each provider may have separate controls and data practices. |
What a privacy setup can reasonably promise
A layered setup can reduce some optional collection and block selected domain lookups; it cannot guarantee that a smart TV is anonymous or that every data flow has stopped. Manufacturer disclosures describe their stated practices, not independent verification of every device’s behavior. For a practical approach, disable optional TV features you do not want, review app permissions, route DNS through Pi-hole where your network supports it, and test the functions you rely on.
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