Hi Willy,The APIs you've referenced are for DPS Classic (called Digital Publishing Suite rather than the newer Digital Publishing Solution ), which as Kristy points out, does provide some additional login options made possible with custom coding. There are no analogous APIs available in DPS 2015 (Digital Publishing Solution) and one can't write a custom app to access the same server-side APIs used by the out-of-the-box DPS apps.Thanks,Brian