ensure that people are able to use these mobile devices around the Olympic venues, but also to protect the Olympic infrastructure from them is something, which has also been thought of a long time in advance. They were clearing radio frequencies for Wi-Fi use a number of years ago making the space so that the noisy data exchange, the information traffic, wasn't going to be a problem, either in capacity or as a potential threat. BB: Is there a single point of responsibility for cyber security in the Olympics? D-EN: The Police Central e-Crime Unit (PCeU) was set up a few years ago and one of its main responsibilities was looking at the whole process for cyber security leading up to the Games. They've been partly responsible, for example, for deciding which companies to allocate a wide range of different areas of the security to. The basic security process has been ongoing from the start. For example, biometric security was used on the main Olympic stadium building site for people to enter and exit. Years ago, people were already worrying about technological solutions to improve the security. BB: Much of the physical security at the Games is also dependent on electronics. Is this a risk? D-EN: I think we've got to avoid going over the top because you can think of terrible scenarios if people takeover the whole of the electronic infrastructure and cause damage. "When Britain won the right to host the games, no-one could have predicted the rise