In the realization of an informative network, one should mainly consider the costs for the installation of the infrastructures aimed at the information transport: these costs often limit the capillarity of the network and consequently the number of users. The text messages taking advantage of the normal GSM network by now fully spread on the territory, allow the SMS-SHOWS displays to quickly build uncabled informative networks and, thanks to the possibility of working through fotovoltaic cells, the installations can be also made even in the most unthinkable places.The desire to move the installation point in any moment can be satisfied in few minutes.