A final remark must be made about the way users can interact
with the mobile-collected data. This is presently bounded to the
traditional 2D visualization but could be possibly extended to the
third dimension by means of virtual globe technology. As a matter
of fact, 3D visualization can represent a crucial improvement for
projects such as the one on slow tourism valorization, which is
focused on a mountainous region and can thus highly benefit from
a more realistic globe-based visualization. Moreover, a new solution
is under current development to complement the simple 3D
data access with a pool of other functions, aimed at enhancing user
participation after data collection process. Examples are data filtering
in time (which would result in a 4D visualization), the upload
of new multimedia contents related to the field-collected data,
the addition of any external layer (e.g. from other ODK Aggregate
and WMS-compliant servers), and the subsequent creation of customized
3D projects.