Ravi Mattu reports on the latest technology on display at Founders Forum, one of Europe's leading events for tech entrepreneurs, from drones that interact with social media to a new gesture-based keyboard and a bicycle made entirely from recycled junk.<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Subscribe to the Financial Times on YouTube; http://goo.gl/vUQx5k<br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
