This system is run by using the application on a personal computer, which is connected to the school bells and school public proclamation systems. The product development started as early as in 1992. The existing version is used in five schools, and the momentary price of the system is 4,500 kn. Since similar problems have been noticed outside Croatia as well, the export to the neighboring countries’ markets, or even further expansion, is under way. The original idea could to be easily modified in order to meet the market demands.