The latest on the VTech toy company hack with Ken Munro of Pentest Partners. Is the fad for smartwatches already over? The BBC ask Eric Migicovsky, founder of Pebble, one of the earliest devices of this kind. Paul Cameron talks to us about Booktrack, his idea to give e-books a soundtrack. And Mark Lawson-Statham of Intelligent Energy tells all about plans for a hydrogen fuel-cell phone battery.