The acceptability of the system has been considered, in an
indirect way, and mainly by means of preliminary interviews.
These interviews regarded systems which had a similar complexity
to the powered wheelchair (mobile robots). Though the
system has not yet been validated with the users, the functional
specifications of the navigation module were defined on the
basis of the interviews, so it can be assumed that the modalities
of control of the whole system will be accepted by the target
population.