An new Apple patent application could lead to 'audible' internet marketing.
Textual hyperlinks have long been used as a tool of internet marketers, but this could soon be set to change with Apple's latest application.
Embedding links into podcasts and audio files is not currently possible. However, audible (and inaudible) hyperlinks could enhance audio content by taking the listener to webpages, images or other audible content.
Directing listeners to externally hosted, relevant content was demonstrated at a recent Lady Gaga concert. During one of her songs, an inaudible high frequency tone was played which was only distinguishable by electronic devices. With the help of a service called Sonic Notify, the tones were translated into a hyperlink that led smartphones to webpages and images.
Enhancing the message in this way could clearly revolutionise internet marketing, allowing links from radio adverts or streaming music sites, for example. However, there is likely to be considerable debate over the thorny question of seeking active listener consent to receive the links - a throwback to the backlash against subliminal advertising in feature films of the late 1950s.