Er, we don't want to sensationalize this or anything, but your phone could soon be at the mercy of inaudible sound pulses that trigger location-specific ads, sales promotions and other potentially demonic notifications. Unlike normal advertising within apps, and also different to sound-responsive apps like Shazam and Shopkick, a new platform called Sonic Notify is meant to work discretely in the background, without the need for any user activation. Its creators, NY-based digital agency Densebrain, plan to att
