I have a registered app (with client id and secret id). I want to enable users to download tiled map packages from the app ex: (https://tiledbasemaps.arcgis.com/arcgis/rest/services/USA_Topo_Maps/MapServer)... How do I use the new authentication patterns in version 100 to do an "app" login without having to present the user with the login screen. My users will not have logins to ArcGIS online or portal.
