A recent AdExchanger article emphasizes the uselessness of the banner ad format, calls for advertisers to change their mentality around digital advertising and lists 10 innovative ad tech companies, including XAPPmedia.
From Business Insider, June 2014: "[XAPPmedia's] product allows listeners to talk back to radio ads when they come up on ... mobile apps. It uses an iPhone or Android device's microphone to let users actively participate in the ads, rather than passively listen — or tune them out."