The Three Words Check — printable cards

Cut along the dashed lines. Wallet cards fit a standard cardholder; the large-print card is for beside a landline or on the fridge. Free to share unmodified — from trustonion.io/family-verification-protocol

Wallet cards (light + dark)

Family Verification Protocol

The Three Words Check

1PAUSE — urgency is the tell. Don't act yet.
2ASK — "What are the words?"
3CHECK — all 3 must match your phone.
4ESCALATE — money involved? Ask for a Proofie™.
5REPORT — warn the group, block, report.

Voices can be cloned. Codewords can't. · trustonion.io

Family Verification Protocol

The Three Words Check

1PAUSE — urgency is the tell. Don't act yet.
2ASK — "What are the words?"
3CHECK — all 3 must match your phone.
4ESCALATE — money involved? Ask for a Proofie™.
5REPORT — warn the group, block, report.

Voices can be cloned. Codewords can't. · trustonion.io

A Proofie™ is a selfie signed using your passkey in the Trust Onion app. Use the app to send and verify Proofies, compare the signing key against the person's full public key in your shared group, and check that the exact original photo has not changed since it was signed. The cryptographic signing identity is the full public key, not its shortened label. Compare the verified full signing key with the person's public key in your shared Trust Onion group. This does not automatically verify a real-world identity or detect AI-generated images.

Public by default, under your control. Proofie photos and signed records are stored securely on Amazon Web Services (AWS). A Proofie is public by default: anyone with its link or QR code can view the photo and signed record. You can add a password to make a Proofie private, or delete it at any time. Deleting a Proofie removes its photo and signed record from our AWS storage and takes its link offline, but cannot recall copies someone has already downloaded or saved.

Large-print card (for beside the landline)

Before you send money or share anything:

Scammers can fake a loved one's voice. Run the Three Words Check.

1PAUSE. Say "I'll call you right back." Hang up.
2ASK: "What are the words?"
3CHECK the answer against the words on your phone — or call them back on the number you already have.
4NO MATCH? It's not them. Do not send money. Call a family member you trust.

The Three Words Check — a free family verification protocol by Trust Onion · trustonion.io/family-verification-protocol

Safety note: If you cannot reach the family member when you call back, do not assume the original caller was really them. The caller still needs to confirm your private Trust Onion Three Words; being unable to reach the family member does not authenticate the original call. Always use your best common-sense judgment, and alert the authorities if you believe someone is in danger.