Portable electronic device for making a public loyal to a media or similar.

摘要

The device (1) validates partic. in a promotion which requires gathering of coded data from a mass communication medium. The device has an optical interface (R) or key pad (8) to allow entry of transmitted data. A processor (4), running a stored (12) program, validates partic. based on numbers entered. A memory (12), managed by the processor, stores processed numbers for a pre-determined period of time. A display (6) shows an output code derived from the entered numbers.