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I would like to use WebAuthn to securely store and retrieve some senstive information on mobile Safari.

I mention Safari specifically because it is my main target browser and the storage and retrieval of password credentials is unsupported there. Ideally, I would like to use the device biometric sensors on iOS and as I understand it, it's only possible using WebAuthn and a public key credential.

I don't want to have to create a server based service that has to store this sensitive information and to evaluate credential signatures. I would like to implement entirely on the client side.

Is there any straightforward or workaround solution to achieve this?

Anters Bear
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A passkey is a credential used for phishing-resistant authentication. It is not designed to store arbitrary information nor is WebAuthn designed to store or retrieve arbitrary information.

Tim
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