Smart-home products are usually sold on convenience: see who is at the door from your phone, adjust the thermostat remotely, ask a speaker to control the lights, or check a camera while you’re away. But a connected device is more than the hardware sitting in your home. It may also depend on a mobile app, an online account, cloud infrastructure, software updates, and the manufacturer continuing to support the service.
That means privacy and security deserve a place on the shopping checklist alongside price, compatibility, and features.
NIST’s consumer IoT guidance treats an IoT product as an ecosystem that can include the device itself plus components such as backend services and mobile apps. That is a useful way for buyers to think about smart-home purchases: evaluate the whole dependency chain, not just the box on the shelf.
1. Start with the dependency question
Before buying a connected camera, lock, thermostat, speaker, doorbell, appliance, or similar product, ask a simple question: What still works if the internet connection, vendor cloud, app, or account service becomes unavailable?
Some products can preserve meaningful local functionality. Others depend heavily on remote infrastructure for routine features. The distinction matters because cloud dependence creates another point of failure outside the homeowner’s control.
Look through the manufacturer’s product and support documentation for answers to questions such as:
- Can core functions be controlled locally?
- Does the product require an account?
- Is an internet connection required for setup or everyday operation?
- Are recordings or activity histories stored locally, in the cloud, or both?
- Do useful features require a subscription?
This is not an argument against cloud-connected products. Remote access can be extremely useful. The objective is simply to understand what you are depending on before bringing the product into your home.
2. Check what the product can collect
A smart-home device can potentially generate information far beyond the obvious data required for its main function. Depending on the product, that may include video, audio, location, device identifiers, usage patterns, occupancy or activity information, and account information.
NIST research into smart-home users has highlighted privacy and security concerns around connected-home technology and the difficulty consumers can face when trying to understand or control those risks.
Before buying, check both the privacy policy and the device-specific support documentation. Look for what information is collected automatically, what permissions are optional, whether features can operate with certain permissions disabled, and whether data collection settings can be changed later.
A useful rule is to compare each permission with the feature it enables. A permission may be completely reasonable for one function while unnecessary for another. Buyers should understand that tradeoff rather than accepting every default without review.
3. Look beyond the device to the account
The physical device is only one part of the security model. If remote access is controlled through an online account, account security becomes part of home security as well.
Before purchasing, check whether the vendor provides protections such as multi-factor authentication, security or login notifications, management of signed-in devices or sessions, and a clear way to change credentials or delete the account.
After setup, use a unique password and enable multi-factor authentication when it is available. The FTC also recommends changing default credentials on internet-connected equipment and keeping devices updated.
It is easy to focus on whether a camera or lock uses encryption while overlooking the account that controls it. Buyers should evaluate both.
4. Find the retention and sharing rules
“Collects data” is only the beginning of the privacy question. What happens afterward matters just as much.
Look for answers to four things in the vendor’s privacy documentation:
- What information is retained?
- How long is it retained?
- Who can it be shared with?
- How can the user delete it?
Also distinguish between information necessary to provide the service and information used for analytics, personalization, advertising, product development, or other purposes.
Privacy policies are not always pleasant reading, but searching within the document for terms such as “retain,” “delete,” “service provider,” “advertising,” and “account” can make the review much faster.
If the answers remain unclear after reading the policy and support pages, that uncertainty itself belongs in the buying decision.
5. Investigate the update policy
Smart-home hardware may remain installed for years, which makes software support particularly important.
NIST’s consumer IoT cybersecurity baseline identifies capabilities that consumer connected products should support across the product—not simply at the hardware level. Buyers do not need to become cybersecurity specialists to use that idea. They can look for visible evidence that the manufacturer treats security as an ongoing responsibility.
Before buying, look for:
- A stated software or security-support period
- Information about automatic or manual updates
- A security or vulnerability-reporting page
- Advisories or release notes showing that existing products receive fixes
The absence of a clearly stated support period does not automatically make a product insecure. It does, however, leave the buyer with less certainty about how long the connected product will be maintained.
6. Plan for the product’s end of life before buying it
Connected products have two lifetimes: the lifetime of the hardware and the lifetime of the digital services supporting it. Those timelines do not necessarily end together.
Before purchasing, consider what happens if the manufacturer stops supporting the model, changes its service, discontinues an app, or eventually shuts down the infrastructure the device depends on.
Useful questions include:
- Will basic local functionality remain?
- Is there an announced end-of-support policy?
- Can stored personal data be deleted?
- Can important data be exported?
- Is the device still useful without a paid or cloud service?
This issue becomes more important for products expected to stay in a home for many years. A connected light bulb is relatively easy to replace. Locks, cameras, thermostats, appliances, and other installed products can involve considerably more friction.
7. The 60-second smart-home pre-purchase check
A full privacy review can take time, but buyers can perform a quick first-pass check before purchasing any connected-home product:
- Dependency — What works without the vendor’s cloud or internet connection?
- Sensors — Does it contain a camera, microphone, location capability, or other sensor, and which features use them?
- Data — What does the privacy policy say is collected, retained, shared, and deletable?
- Account — Is multi-factor authentication available, and can sessions/devices be managed?
- Updates — Does the manufacturer explain how security updates work and how long support lasts?
- End of Life — What happens to functionality and stored data when support ends?
- Control — Can unnecessary permissions, collection, or cloud features be disabled?
If several of those questions cannot be answered from the manufacturer’s documentation, spend a few more minutes investigating before clicking Buy.
The Better Buying Habit
Smart-home privacy does not require avoiding connected technology. It requires recognizing what is actually being purchased.
A smart camera is hardware plus software, an account, data practices, updates, and often a cloud service. The same principle applies to connected doorbells, speakers, locks, thermostats, appliances, and other IoT products.
NIST’s consumer IoT work reinforces this whole-product perspective, while FTC consumer guidance emphasizes basic protections such as securing the home router, changing default credentials, and keeping connected devices updated.
For buyers, the practical lesson is straightforward: compare the digital lifecycle as carefully as the feature list. Ten minutes spent checking permissions, account security, update commitments, data practices, and cloud dependence can reveal differences between products that look nearly identical on a retail page.
- The Hidden Privacy Cost of Smart Home Purchases: A Buyer’s Risk Checklist - October 11, 2026