Due to the Online Native Mobile applications architecture, it's essential to have a security mechanism to restrict access only to users authorized to the application data.
In this architecture, it's through REST Web Services that data updates (PUT, POST, DELETE) and queries (GET) are performed. That's the reason why it's so important to have a security mechanism to prevent that such actions are performed by not authorized users.
The GeneXus Access Manager (GAM) automates the creation of this security mechanism.
To implement Native Mobile authentication using GeneXus Access Manager (GAM), follow these steps:
My first application with integrated security enabled
GAM architecture for Native Mobile applications