Know it's them.
Before you send the money.
Guardian Line listens alongside your phone calls in real time and warns you the moment a voice sounds cloned or a conversation turns into a scam.
Two signals. One calm answer.
Voice forensics and conversation analysis are fused into a single, explainable Trust Meter — either signal can raise a flag, both together escalate it.
Voice authenticity signal
Real signal processing — pitch jitter, shimmer, spectral flatness — estimates the probability a voice is synthetic, entirely on-device.
Conversational risk signal
Live transcript analysis tags urgency, money requests, secrecy demands, and impersonation claims as they're spoken.
One fused Trust Meter
Both signals combine into a single calm, color-graded gauge — never a black box, always explainable.
Safe Word verification
Pre-register a private family phrase. If a call turns risky, Guardian Line prompts you to ask for it.
Family Circle alerts
A trusted contact can optionally be notified in real time when a call crosses a high-risk threshold.
Privacy-first by design
Audio never leaves your device. Only anonymized risk scores are ever transmitted, and only if you opt in.
Calm, not alarming.
Color-graded green → amber → red instead of flashing sirens. Every flag is paired with a plain-language reason, and every alert pairs with a concrete next step — never just a number.
- Explainability panel for every flag
- Inline transcript highlighting
- Shareable post-call report
- English + Spanish from day one
What it looks like in the moment
Trust Meter sits calmly around 90 — the call opens like any normal one.
"Don't tell mom and dad" is flagged as an isolation tactic. Score drifts to caution.
A gift-card payment request stacks on top of the urgency already flagged. Score drops into danger — Break the Spell and the Safe Word prompt both appear.
See it catch a cloned voice.
Record yourself, then compare against a synthetic reference sample — watch the Trust Meter react in real time.
Try the voice demo