The proliferation of smartphones in the last decade and the number of publications in the field of authoring systems for computer-assisted learning depict a scenario that needs to be explored in order to facilitate the scaffolding of learning activities across contexts. Learning
resources are traditionally designed in desktop-based authoring systems where the context is mostly restricted to the learning objective, capturing relevant case characteristics,
or virtual situation models. Mobile authoring tools enable learners and teachers to foster universal access to educational resources not only providing channels to share,
remix, or recontextualize these, but also capturing the context
in situ and in time. As a further matter, authoring educational
resources in a mobile context is an authentic
experience where authors can link learning with their own
daily life activities and reflections. The contribution of this
manuscript is fourfold: First, the main barriers for ubiquitous
and mobile authoring of educational resources are identified;
second, recent research on mobile authoring tools is
reviewed, and 10 key shortcomings of current approaches are
identified; third, the design of a mobile environment to
author educational resources (MAT for ARLearn) is presented,
and the results of an evaluation of usability and hedonic quality are presented; fourth, conclusions and a research agenda for mobile authoring are discussed.