# ZealiD Documentation > Onboard new customers using remote identity verification. Allow them to access your services with one touch. ## Guides - [ZealiD CSC 2QR API in detail](https://developer.zealid.com/docs/csc-api-in-detail.md) - [Maintenance windows](https://developer.zealid.com/docs/maintenance-windows.md) - [Incorporating ZealiD VC to your application](https://developer.zealid.com/docs/zealid-vc.md) - [Integration with iFrames](https://developer.zealid.com/docs/iframe.md): The best design practices for implementing the ZealiD signing widget into document signing applications such as Adobe Acrobat Sign, DocuSign, Evidos, Foxit and similar. - [iFrame localisation](https://developer.zealid.com/docs/iframe-localisation.md): Integrating multi-language support for visible texts in iFrame widget. ## API Reference - [Getting Started with CSC 2QR API](https://developer.zealid.com/reference/getting-started-with-csc-2qr-api-1.md): This page will help you get started with CSC 2QR (two QR code based flow) API.