# Backend-initiated registration and authentication with the MobileID App
Backend-initiated registration and authentication allow the customer to offer registration and authentication capabilities for a web application through the MobileID App.
In the backend-initiated scenario, the operations are started through a backend. In the examples below, this is the merchant's website.
# Backend-initiated operations process
The lists provide step-by-step instructions and detailed descriptions of the different operations. The sections in the lists correspond to the numbered steps in the sequence diagrams.
Registration, or device activation, is the prerequisite for authentication. This means that an end-user who has completed the registration process can authenticate their identity.