How 3D technology is capturing the world

London design studio Sample & Hold has been asked to scan all kinds of things: a shoe, a carrot, the heads of every member of the Barcelona FC team. The firm has even worked with a company in Knightsbridge, London, that makes casts of babies' feet and heads. "Occasionally they have a client who wants a head scan of their kid," explains Sample & Hold director Sam Jackson. Those scans have been used for bronze casts of the child's head, and the 3D scan speeds up that process. Sample & Hold doesn't need lasers to do this 3D scanning.