Abstract: A method for managing and issuing personalized commercial offers during the stay in a point of sale, and a system that uses the method. The system comprises at least one system access device connected to a server, which in turn is connected to a database that contains an archive of historical data related to users. The server further comprises means for generating an offer that is based on the historical data; the system access devices comprise at least one interface for identifying consumers that is independent of the point of sale where the system access devices are located.

Abstract: In a method and apparatus for awarding a prize in a commercial establishment which includes at least one data terminal for communicating over at least one data line with a central processing unit, the communicating of the at least one data terminal including a data stream of information representing a commercial transaction performed at the data terminal, the improvements are:a) detecting the data stream;b) extracting signals identifying the commercial transaction performed at the at least one terminal from the detected data stream;c) comparing the identifying signals with predetermined reference signals and generating an enabling signal when a predetermined relationship exists between the reference and identifying signals; andd) generating a win signal upon receipt of the enabling signal; and, for awarding a prize based on the win signal.

Abstract: A hydromassage bathtub with ultrasound micromassage system comprising a plurality of ultrasound emission devices (13, 113) distributed over the walls of the bathtub. The ultrasound emission devices (13, 113) comprise means (23, 26; 118, 125) for orientating the direction of emission of the ultrasounds into a wide beam, at least 10 cm. wide at a distance of 20 cm. from the source. In case of conical beam, the means orient the beam into a solid angle of not less than 30.degree. and advantageously at least 50.degree.. With one ultrasonic emitting element (24) inside the emission device the emission beam obtained is superior to the natural width or divergence of said element.