Spotting Unicorns in Dublin

Rory Cellan-Jones talks to Nicolas Brusson of BlaBlaCar, and Ambarish Mitra of Blippar, founders of two European "Unicorns" - companies valued at over a billion dollars. Plus Kickstarter's CEO Yancey Strickler tells why he thinks crowdfunding is only just getting going, and Nell Watson, Futurist at California's Singularity University predicts the power of Augmented Reality. Recorded at the Web Summit in Ireland's capital, Dublin.

(Photo: Yancey Strickler of Kickstarter being photographed by Rory Cellan-Jones).