Is it still necessary to practise GIS fieldwork? That is the question one may ask nowadays. As numirical systems are spreading more and more widely, data producing organisations are more and more numerous in offering or selling geographical information in every field, and at a distance on the web statistics, terrain numerical models (Shuttle Radar Topography Mission), vectorial data, raster data. So that geographers/geomaticians will produce more and more precise maps with no systematic practice of field work. However, the above should be qualified. The arrival of the Net, the nomadic development of communication, of mobility, and the increasing proportion of the open source characterise the present day evolution of GIS against a democratis...