azuma doa Flutter Example

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azuma doa example is a reference client for the azuma DOA platform. It exists to
show integrators how the device binding, passkey and biometric flows fit
together, and to give the team a real client to test protocol changes against.

It is a developer sample, not a product. It holds no patient data, performs no
clinical function, and is not a medical device.

WHAT IT DEMONSTRATES

• Device binding — a hardware-backed key pair generated in the Android KeyStore,
with key attestation proving to the backend that the private key cannot leave
the device.
• Username and password sign-in, where every request is signed by that device key.
• Passkeys (FIDO2) — creating an account whose first credential is a passkey,
linking a passkey to an existing account, and passwordless sign-in, all through
Android Credential Manager.
• Biometrics — an EC P-256 or RSA-3072 key held behind BiometricPrompt, used to
link a biometric credential and to sign in with it.
• Sign-in by account ID, and session token refresh.
• A dashboard listing the profile, linked passkeys and linked biometric
credentials, with unlink for each.

REQUIREMENTS

• Android 9 (API 28) or newer.
• Passkey and biometric flows need a device with a screen lock and an enrolled
biometric.
• An account on the azuma test environment. This build talks to a test backend
and is not connected to production data.

DATA

Credentials you enter are kept on the device in Android KeyStore-backed
encrypted storage and are sent only to the azuma backend. The app contains no
analytics, advertising or tracking components.