Very Cool: Sonic Notify: the inaudible QR codes only an app can hear (Wired UK)

via wired.co.uk

Excerpt from the original post:

"A startup called Sonic Notify is working on a product that embeds inaudibly high-pitched signals into music and audio, which can be detected by your smartphone.

When a compatible app hears the signal, it could be triggered to take an action -- linking you to a website, displaying text or an image, or bringing up a location on a map. That yields all sorts of possibilities -- you could vote on your favourite song of a performance, or be directed to a secret aftershow party, for example...."

http://www.wired.co.uk/news/archive/2012-02/08/sonicnotify-audio

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