Tap to Sign
Rolling outNFC-backed authentication and co-signing. The physical badge as a cryptographic device.
Tap to Sign makes the physical badge a first-class cryptographic device. Tap to activate, tap to sign a transfer, tap to co-sign an attestation with another member. The NFC-backed signature is verified on-chain — no app required for the signer.
This page is being written.
The structure is fixed. The prose is being drafted from the source material and reviewed by HeartChain Labs before publication. If you need this information urgently, email docs@heartbadge.com .
What this page will cover
- What a tap signs (and what it doesn't)
- Hardware requirements and compatible devices
- Co-signing with another member via a shared tap
- Security model and key custody
- Fallback when NFC is unavailable