About Guardian Line

AI voice cloning now needs as little as 3–10 seconds of sample audio to produce a convincing clone of someone's voice. Scammers are already using cloned voices of grandchildren, bosses, and bank officers to build urgent, emotionally manipulative calls. Guardian Line exists to catch that live — during the call, not after the money is gone.

How it's built

Two independent signals — real client-side audio forensics and a rolling scam-language classifier — fuse into one calm, explainable Trust Meter. Everything runs on-device by default. See the README on GitHub for the full technical breakdown, including an honest account of what's a measured signal versus a documented heuristic.

What this isn't

Guardian Line is not a certified fraud-detection product, not a law-enforcement tool, and not a replacement for your own judgment or your bank's fraud department. It's a co-pilot — built to make the moment of doubt a little clearer, a little calmer, and a little more actionable.