In this interactive workshop we focused on multi-factor authentication and Single Sign-On solutions for mobile native applications. The main objective was to create awareness of the current limitations of these solutions in the mobile context. Thus, after an introduction part, the participants were invited to discuss usability and security issues of different mobile authentication scenarios. After this interactive part, we concluded the workshop presenting our on-going work on this topic by briefly describing our methodology for the design and security assessment of multi-factor authentication and Single Sign-On solutions for mobile native applications; and presenting a plugin that helps developers make their mobile native application secure.