Start here
The free tool below runs entirely in this browser — no account, nothing stored or transmitted. Redact anything you would not want kept before you type it.
Open the companion tool →Why the ears are the wrong instrument
Voice cloning now works from a small sample of recorded speech — a greeting, a voicemail, a clip posted publicly. Replay quality has already passed the point where most listeners, including experts, can reliably separate a clone from a real recording.
What a clone cannot produce is a channel you control. Calling back on a number you already had, or asking something that is not publicly searchable, does not depend on judging the audio at all.
The protocol
- Do not act on the message's ask. Note it, then stop: urgency, secrecy, and payment instructions are about the request, not the voice.
- Identify the sending number and ask whether it is in your contacts and expected. An unfamiliar number claiming to be someone you know is a reason to change channels.
- Reply on the channel you would normally use with that person — call the number you already had, or send a message they have answered before.
- Ask one question that is not publicly searchable if money, codes, or access are involved.
- If the request involves a payment app or code, verify with a second person who knows them before anything moves.
What the tool does
Describe the voice note and get a channel-switch reading: what the message proves, what the sending number proves, and exactly who to call before anything moves. It runs in this browser; nothing is sent or stored.
Limit first: This is a verification-habit aid, not a forensic tool. It cannot tell you whether a voice is real or cloned, and a clean reading never proves a message is genuine.
Open the companion tool →One human next step
If money already moved, contact your bank or payment service immediately, then report at ReportFraud.ftc.gov and ic3.gov. Keep the voice note — it is evidence, and it helps your bank's case.
Research log and safety checks
AI-assist path: not used for a verdict. Voice authenticity is exactly the judgment this tool refuses to render — the artifact is a channel-switch protocol, and §1.2 UIC-10 forbids a certainty claim about whether a recording is synthetic. §6.10: not a frontier-pace topic.
§0.5 protection result: category is scam-fraud-defense; crisis-adjacent: no; fear/urgency/scarcity toolkit used: no. The protective function is free and the paid feature is convenience only.