Bitcoin Audible Read_936 - Breez SDK Launches Passkey Login
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Mar 31, 2026 A dive into Breeze SDK’s new passkey login and how seedless wallets could lower barriers to self-custody. Explanation of passkeys, FIDO2/WebAuthn, and why standard passkeys fall short for deterministic recovery. Overview of Breeze’s PRF extension, recovery options, and developer tools like the Glow app. A call to meet users where they are to make Bitcoin easier and more widely adoptable.
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Passkey Login Replaces Seed Phrases For Onboarding
- Passkey login lets self-custodial wallets remove the seed-phrase barrier by deriving keys from FIDO2/WebAuthn passkeys.
- Breeze uses the WebAuthn PRF extension to deterministically derive wallet keys while keeping private keys inside device secure elements like Apple Secure Enclave.
WebAuthn PRF Enables Deterministic Wallet Derivation
- Standard passkeys needed an extension to function as deterministic wallet recovery seeds; Breeze leverages the WebAuthn Level 3 PRF extension for this purpose.
- PRF produces the same deterministic output for the same passkey+input while the private key never leaves the secure enclave.
Keep Seed Phrase Fallback For Portability
- Provide a fallback BIP39 seed export to preserve interoperability for users who need cross-platform recovery.
- Breeze keeps backward compatibility: users can export a 12-word mnemonic if they move to platforms that don't support passkeys.