Treat audio as a separate decision—not a camera default
Audio can help with a door conversation or an alarm event, but continuous ambient recording is substantially more intrusive than video alone. Start with audio off, define a specific purpose, then enable only the minimum needed.
Two-way talk
Useful for speaking to a visitor when deliberately activated. Check whether the camera also stores the conversation.
Clip audio
Sound attached to motion events may add context, but can capture neighbours, passers-by, workers or private conversations.
Audio analytics
Glass-break, smoke-alarm or distress detection may process sound without making it equally useful—or lawful—to retain continuous audio.
Decide feature by feature
| Feature | Potential use | Risk-control questions |
|---|---|---|
| Live listening | Checking an active event | Who can activate it? Is access logged? Could it capture people inside or beyond the property? |
| Two-way talk | Visitor communication or warning | Is it push-to-talk? Is the session recorded? Is the speaker volume appropriate? |
| Event-clip audio | Context around a detected event | What starts and ends the clip? Are pre-roll seconds recorded? Can audio be disabled per camera? |
| Continuous audio | Rarely proportionate for ordinary domestic security | Why is video or event-only sound insufficient? What legal basis and safeguards apply? |
| Sound detection | Detecting alarms, breaking glass or unusual noise | Is raw audio stored or only analysed? Are false alerts likely? Does processing happen locally or in the cloud? |
A safer setup checklist
- Write down the precise security purpose before enabling a microphone.
- Keep audio off on cameras covering pavements, neighbours, communal areas or shared entrances unless properly justified.
- Use push-to-talk, event-only capture or analytics without retention where they meet the need.
- Limit users, protect accounts with strong authentication and review access regularly.
- Set the shortest useful retention and delete test recordings.
- Use privacy masks and reposition the camera—but remember a visual mask may not limit the microphone.
- Provide signs or notices where required and handle access requests appropriately.
- Reassess when tenants, employees, carers, tradespeople or children may be recorded.
Country-specific legal starting points
| Country | Start here |
|---|---|
| United Kingdom | The ICO domestic CCTV guidance and its surveillance guidance stress necessity and proportionality; the ICO describes audio as more intrusive and says continuous recording is generally difficult to justify. |
| United States | Audio-recording and consent rules vary by state and context. Check the current law where the camera and the people recorded are located; do not rely on a generic “one-party” summary. |
| Canada | Federal and provincial rules and the household/business context can differ. The Office of the Privacy Commissioner guidance is a useful privacy-design starting point. |
| Australia | Coverage depends on federal, state and territory law and the context. See the OAIC security-camera overview, then check the relevant local rules. |
| Ireland | See the Data Protection Commission domestic CCTV guidance; recording outside the purely personal or household sphere can bring data-protection duties. |
This is a practical privacy checklist, not legal advice. Laws can turn on location, reasonable expectations, consent, domestic exemptions, employment or tenancy, and whether audio is transmitted, monitored or stored.
Continue the privacy review
Run the connected-camera audit · Review camera placement · Compare outdoor camera previews
Last checked: 1 September 2026. Check current official guidance and obtain local advice where the recording context is sensitive or uncertain.