The surveillance of the people is examined by means of some theoretical considerations under Foucault point of view. These are utilized to study four distinct technological systems. The aim of this revision is discuss the analytical applicability of Foucault’s Panoptic. The starting point is a postulate: new technology has the potential to affect the social relationship in some complex ways. This claim justifies this exploratory essay, that employ some cases afford by the specialized literature. In three situations the Panoptic is found insufficient or inappropriate. But in the truck tracking system the metaphor is found good enough. In conclusion, this could suggest the applicability of the model depends on the sort of the surveillance system in question. However, despite the fact that in some cases the reality is far way of the conditions of the model, the Panoptic metaphor can be conveniently and gainfully applied as illustrated in this paper. Key-words: surveillance, power, Panoptic, tracking system, GPS.