[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [WebAuthn](./puppeteer.protocol.webauthn.md) > [Credential](./puppeteer.protocol.webauthn.credential.md) > [userHandle](./puppeteer.protocol.webauthn.credential.userhandle.md) ## Protocol.WebAuthn.Credential.userHandle property An opaque byte sequence with a maximum size of 64 bytes mapping the credential to a specific user. Signature: ```typescript userHandle?: string; ```