It's an important cost to hire a tourist guide for an individual traveller. For that reason, individual travellers cannot learn deep details about historical buildings or tourist attractions in a destination, as they do not have the opportunity to travel with a tourist guide. Especially the stories of places that don't have physical venues.
Also, they cannot discover the hidden gems that only human guides experienced before. With the Digital Tourist Guide, tourists will have the opportunity to get instant information as if they are travelling with an experienced human tourist guide, 7/11.