What will be the next big thing online? And how will it change our lives? In the Digital Giants series, the digital world's top thinkers share their visions of the future with the BBC.
Ge Wang, co-founder of Smule and assistant professor at Stanford University speaks about the power of mobile apps and how they can enable meaningful human relationships.
Digital Giants is part of
, a season of programmes on TV, radio and online exploring the extraordinary power of the internet.