Como é que a rádio pode aumentar a interactividade

«A key interface repeatedly referred to throughout the conference was “the red button,” an established concept in television here. During programs with additional/interactive content, viewers can press a red button on their remote to access the content. Speakers outlined proposals for the use of the red button as a conduit for personalized content provision and additional revenue generation, some of which is due to become operational later this year».

fonte: Lawrie Hallett, «Digital Show Faces Realities», Radioworld, 2006