Harry Potter's 'invisibility cloak' has moved a step closer to reality thanks to European Commission funded nanotechnology research. Scientists from Germany, Greece, Turkey and the UK have succeeded in tailoring the flow of light using nanotechnology, opening the way not only to potential applications in lenses and optical circuitry but also to exotic three dimensional devices such as 'invisibility cloaks'. Although currently limited to cloaking objects of sub-millimetre size, the project has delivered a key proof-of-principle for engineering optical properties of materials in ways believed impossible until now. The project is part of the Commission's initiative to boost high-risk ICT research in future and emerging information technologies, an objective of the Digital Agenda for Europe.