LONDON, ENGLAND--(Marketwired - May 21, 2014) - Taggalo, the proof-of-display and audience solution for the digital out-of-home advertising market, was selected to speak at the DailyDOOH Media Summit in London on Tuesday, May 13th.�Selected as one of only seven emerging technologies to be featured at the summit, Taggalo showed for the first time, its unique sensor technology for the Digital-out-of-home market.