[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [WebAuthn](./puppeteer.protocol.webauthn.md) > [Credential](./puppeteer.protocol.webauthn.credential.md) > [credentialId](./puppeteer.protocol.webauthn.credential.credentialid.md) ## Protocol.WebAuthn.Credential.credentialId property Signature: ```typescript credentialId: string; ```