​​ Video guide in the Italian Sign Language and IS

​ L.I.S. is not spoken but "shown"; it is a means of communication based on visual perception; *Numerous Sign Languages exist. Among the best known are: American sign language (ASL), Langue des signes française (LSF), the British sign language (BSL) and the Italian Sign Language (LIS); The international language database Ethnologue, enumerates over 121 different sign languages;
* Deafness affects 5% of the world's population, that means about 360 million people. No Museum, Archaeological Park, Cave, Cultural Institution, Town, ancient village, Exhibition or Event should be without the L.I.S. video guide; Many public and cultural places have already equipped themselves with an L.I.S. video guide; Many others are focusing their economic resources to fill the lack of LIS among translated languages.