The success of the project on architectural barriers could
instead be explained by the opposite reasons: students understood
the importance of the reporting activity; instructions were given to
them during a real meeting and not through a website (i.e. their
involvement was much more stimulated); and, in a sense, they
‘‘had to do’’ the activity to complete their school-work initiative
(i.e. they had a strong incentive to undertake the work). In any
event, as mentioned in Section 3.2.2, the Como city center was satisfactorily
covered with reports even if students were not given
constraints neither on the number of architectural barriers to
report nor on the time to be spent on the activity. It is thus clear
that the mainly social value of this project, which in this sense is
comparable with traditional PPGIS practices, played a key role for
determining its success in terms of user engagement.