There is one basic method to get information from the world and it is text, which has graphically different visual according to the appearance of the written language. Firstly, picturesque was the main part of the text. The picturesque meaning reduced when in the world appeared phonetic language with the graphic signs. In XIX century there was added Braille alphabet for blind people. This alphabet can be read only with touch. In the modern world touch-screen is also thematic. A touch-screen system offers people to obtain and disseminate information. In XX century the information spread process was very easy. Today we only meet minimalist bar codes in the streets. One of the most popular method is quick response, which keeps a large number of information. QR can be read only with special technique. For that QR is similar of Braille alphabet. We need to know Braille alphabet combinations to read the text as well as the code of QR. Finaly both texts resembles the task, whose solution is impossible without special knowledge.