Method of providing user interface, especially for conducting commercial transactions over the internet

The subject of the invention is a method of providing user interface for communication between a user, with user-related information stored in the database of users, and a supplier, with supplier-related information stored in the database of suppliers, especially for conducting commercial transactions over the Internet, carried out by means of a digital processing device that communicates with a display, data input devices, data output devices and data transmission devices, comprises the following steps: a) obtaining a digital model of a real building corresponding to the supplier, b) obtaining data that describe the exact geographical location of this real building corresponding to the supplier, c) obtaining graphical data corresponding to a digital map of the neighbourhood of the real building corresponding to the supplier, d) processing graphical data obtained in step c) by positioning said digital model on said digital map of the neighbourhood, according to the data that describe the exact geographical location of the real building corresponding to the supplier, obtained in step b), e) displaying a visualization of graphical data processed in step d) using said display, and f) enabling said communication between the user and the supplier depending on said visualization, wherein said steps a)-f) are performed dependent on the input data provided by the user by means of a data input device that communicates with said digital processing device.