DST is a company that deals with the assistance and sale of security systems - CCTV, Burglar Alarm, Fire Alarm, Access Control - to the installer. Through the "DST" application, the company offers an alternative way to communicate with its customers by notifying promotions, news, training courses and providing an innovative tool for managing assistance. Through the app, the installer can in fact chat in real time with the DST virtual assistance service for immediate resolution of problems.