Audio Recording Laws by State: A Plain-English Overview

This is general information, not legal advice. Laws change and have exceptions. For your specific situation, consult a qualified attorney. This overview is a starting point so you can ask the right questions.

If your security camera or voice recorder captures sound, a different set of rules applies than for video alone. The key concept is consent.

One-party vs. all-party consent

• One-party consent: it's legal to record a conversation as long as at least one person in it (which can be you) consents. Federal law works this way, and most states follow it.
• All-party ("two-party") consent: everyone in the conversation must consent to being recorded.

The catch: which law applies can depend on where each person is, so if a call or conversation crosses state lines, the stricter rule is the safe assumption.

States that generally require all-party consent

Several states have all-party-consent rules for private conversations. These have historically included:

California, Delaware, Florida, Illinois, Maryland, Massachusetts, Michigan, Montana, Nevada, New Hampshire, Pennsylvania, Oregon (in-person), Washington, and Connecticut (in some contexts).

The specifics — and how courts interpret them — vary and change over time. Treat this list as a prompt to verify your state, not as the final word. Everywhere else generally follows one-party consent, but always confirm.

The "reasonable expectation of privacy" test

Consent laws usually apply to conversations where people have a reasonable expectation of privacy — a private room, a phone call. Recording in a truly public place where no one expects privacy is treated differently. But don't rely on this to record private talk; expectations are easy to misjudge.

What this means for your devices

• Security cameras with audio: in an all-party-consent state, recording sound in areas where people talk privately can be a problem. Many people disable audio on cameras, or post notice that recording is taking place.
• Nanny cams: disclosing cameras to caregivers, or turning audio off, avoids most issues. See our nanny cam guide.
• Dash cams: these often record cabin audio. If you carry passengers in an all-party state, consider muting audio or telling passengers.
• Voice recorders: using one to capture your own meetings or dictation is straightforward; recording others' private conversations without consent is where the law bites.

Practical rules of thumb

1. When unsure, get consent or give notice — it's almost always the safe path. 2. In all-party states, assume you need everyone's OK to record a private conversation. 3. Disable audio if you only need video. 4. Don't record conversations you're not part of.

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_Internal links: → Shop Voice Recorders · → How to Choose a Dash Cam · → Nanny Cam Buying Guide and the Law · → Legal Use Policy._