> For the complete documentation index, see [llms.txt](https://docs.vida.id/identity-stack/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.vida.id/identity-stack/authentication/authentication-factors/cryptographic-token-pki/integration-workflow.md).

# Integration Workflow

- [Device Registration](https://docs.vida.id/identity-stack/authentication/authentication-factors/cryptographic-token-pki/integration-workflow/device-registration.md)
- [Message & Transaction Signing](https://docs.vida.id/identity-stack/authentication/authentication-factors/cryptographic-token-pki/integration-workflow/message-and-transaction-signing.md)
- [User Presence](https://docs.vida.id/identity-stack/authentication/authentication-factors/cryptographic-token-pki/integration-workflow/user-presence.md)