> For the complete documentation index, see [llms.txt](https://docs.iadvize.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.iadvize.dev/use-cases/visitor-experience/authenticated-messaging/web-client-side-implementation/how-to-implement-the-customer-authentication-backend-token-provider.md).

# How to implement the customer authentication backend (token provider)?

To set up authentication, see section [Web backend implementation](https://docs.iadvize.dev/use-cases/authenticated-messaging/web-backend-implementation)