Vers un prototypage des interfaces graphiques incluant vraiment l'utilisateur final

The requirements for prototyping graphical user interfaces vary depending on the moment they are considered during the development life cycle of the interactive application. For this purpose, the notion of ‘level of fidelity' is introduced, defined, and illustrated so as to be supported by appropriate tools. For each level of fidelity, the strengths and the weaknesses of these supporting
tools are discussed in order to identify which one is estimated the most appropriate for each step of the development life cycle. The levels of fidelity, respectively low, moderate, and high are supported by individual softwares which have been developed for this purpose:
respectively a sketching tool, named SketchiXML, a vectorial drawing tool, named VisiXML, and an advanced interface editor, named GrafiXML. These tools are interoperable by exchanging the specifications of a user interface written in the UsiXML language (USer Interface
eXtensible Markup Language), a XML-compliant user interface description language.