Abstract: A portable electronic device includes a optical reception device, (R), a microcomputer (4) which is appropriate for processing the signals received, a display device (6), an electrical energy source for supplying the various circuits, a keyboard (8), and a device (12) for storing data. The microcomputer (4) is programmed to permit the user of the device to participate in a televised program which is unfolding according to a predetermined chronology by entering at the keyboard responses to questions posed on the screen during the unfolding of the program. Its application is to televised games.

Abstract: This device allows an individual to participate in a television program as a function of remotely loaded data. It includes a device for reception of date (R), a keyboard (8), a clock (10) and a device for processing data entered at the keyboard as a function of the remotely loaded data and for producing a result which is a function of the processing. A device for certification is coupled to the clock (10) in order to measure the elapsed time between a characteristic instant of the running of a scenario in the device (1) and the establishment of a certification link with a server (S). A certified result is supplied by a device for comparison when there is equality, to within a given tolerance, between the measured time and a reference time computed by the server.