If you have a tendency to walk along muttering under your breath then you’re in luck – pretty soon people will no longer assume you’re losing your grip on reality, they’ll just think that you’re using voice controlled tech - which, luckily, is tipped to be the next big thing. Speaking at the Mobile World Congress in Feb, Jae-woan Byun, the CTO of SK Telecom, said that all the voice offerings we have at the moment are “boring for users” but that a “second tsunami” was on its way to shake things up. Normally tsunamis come with their own health warning,…