Frequently asked questions
Does my audio ever get uploaded anywhere?
No. Voice forensics (pitch jitter, shimmer, spectral flatness) run entirely in your browser using the Web Audio API. Raw audio never leaves your device. If you enable the optional LLM classifier in Settings with your own API key, only short transcript text snippets are sent — never audio.
What if it flags a call that turns out to be fine?
Every score is a probability, not a verdict — that's why the Trust Meter shows a range and why every flag comes with a plain-language reason you can judge for yourself. Adjust sensitivity in Settings if you're seeing too many false alarms.
What if it misses a real scam?
Guardian Line is a co-pilot, not a guarantee. It's built on heuristics and pattern matching, not a certified fraud-detection system. Always trust your own judgment, use the Safe Word check, and when in doubt, hang up and call back on a number you already have saved.
Where are my reports stored?
In this browser's local storage, on this device only. Nothing is synced to a server. Clearing your browser data will delete them — export important ones from Settings first.
Is the synthetic voice sample on the demo page a real deepfake?
No — it's a procedurally generated test tone engineered to exhibit the acoustic fingerprints of synthetic speech (near-zero pitch jitter, a mechanically regular envelope), not a clone of any real person's voice. See the demo page for the full explanation.
Is there an iPhone or Android app?
Not a native app — but Guardian Line is a installable web app (PWA): open it in Safari or Chrome on your phone and choose "Add to Home Screen" (a banner offers this automatically where supported). To jump straight to the Live Monitor with one tap, create a Siri Shortcut (Shortcuts app → + → "Open App" → Guardian Line, or "Open URL" pointed at /dashboard) or an Android home-screen shortcut the same way.
Can I embed Guardian Line in another site?
Yes — add ?embed=1 to any URL (e.g. /dashboard?embed=1) and the header/footer chrome is hidden, so it drops cleanly into an iframe on a partner site or a bank's fraud-education page.