Starting from an analysis of real spatial practices of suburban stations users, we try to give a definition of a raw concrete ope rations of appropriation what users can do and what they actual ly do within the apace. The analysis will show that the power of equipment does not lie in its adaptation to the execution of practices planned beforehand, but rather in the fact that it allows an indefi nite number of practices (looking at something, waiting for someone, avoiding someone etc... Among those practices we have defined as operations of appropriation overlapoing, marking, familiarisation, misuse .