Countersign

Set up once · protects every call

A voice can be cloned. A memory can't.

Write down a few questions only your people could answer. When a call sounds like a scam, Countersign picks one for you to ask.

Stays on this device. Questions and answer hints are stored in your browser only. They are never uploaded, and the AI never sees them.

Good questions aren't on social media: shared moments, private nicknames, inside jokes.

Your vault is empty.