Portable electronic device to an audience faithful to a medium or the like.

THIS DEVICE (1) to validate the participation of an individual in a transaction involving READING ON A encrypted information an information carrier. CONSISTS OF 4) FITTED WITH MEANS OF VALIDATION CONDITIONAL SUCH PARTICIPATION ARE REACHED TO BAN SUCH VALIDATION IS a numerical value contained in such information MATCHES NUMERIC VARIABLES PREVIOUSLY STORED least a memory (12) INACCESSIBLE FROM SUCH INTERFACE INPUT (R, 8) AND DIRECTED BY MEANS OF TREATMENT TO SAVE FOR A PERIOD OF TIME DEFAULT INFORMATION rEPRESENTATIVE OF SUCH NUMERIC VARIABLES, DEVICE an exit code X rEPRESENTATIVE OF ENTRIES CONFIRMED BY MEANS OF TREATMENT, AND SOURCE POWER SUPPLY (9) OF DIFFERENT ELECTRONIC DEVICE CIRCUITS. APPLICATION IN GAMES television, radio, OR OTHERWISE.