Sam Shead is at his happiest with a new piece of technology in his hands or nailing down an exclusive story. In the past he's written for The Engineer and the Daily Mail, covering emerging technology in electronics, energy, defence, materials, aerospace, automotive and healthcare. These days, he is particularly interested in web start-ups, social media and security. A one-time Apple refusnik, he's now seriously considering an iPhone5 and has always had a Mac at home.