[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Security](./puppeteer.protocol.security.md) > [CertificateId](./puppeteer.protocol.security.certificateid.md) ## Protocol.Security.CertificateId type An internal certificate ID value. Signature: ```typescript export type CertificateId = integer; ```