Business is struggling to cope with an avalanche of valuable information from 'big data'. Ravi Mattu, FT business life editor, talks to eBay and the designer of the iPhone about using good design to persuade consumers to give up their data and the benefits that brings.
Filmed by Kevin Early and Steve Ager. Produced by Seb Morton-Clark. Additional footage: Getty. With thanks to The British Library and Design Museum, London.