http://www.telegraph.co.uk/connected/main.jhtml;$sessionid$Q4FUQLFTOAZFPQFIQMFSFFWAVCBQ0IV0?view=DETAILS&grid=P8&targetRule=10&xml=/connected/2002/10/09/ecfspy09.xml
"...Prof Rarity began by sending signals to his local pub, the Wyche Inn, over a mile away on a hillside in Malvern, selected for its distance, convenience and because it was possible to aim a laser beam at it. Although his team could not start work until after closing time, when the landlord turned off the outside lights, and after a suitable period in the bar, they were still able to show it could work. Now, working with Ludwig Maximilians University, Munich, his team has managed to use a red laser to send keys between two mountain tops in Germany - Karwendelspitze and Zugspitze. The key problem the team had to overcome was finding a way to filter out the faint laser light signal from all the other light sources, whether street lights, the moon, sky or stars. The team is now planning a prototype short-range quantum communication system for building-to-building exchange of keys to decode coded messages sent in cities..." FROM Will they put spies out of work? Anew era of "quantum cryptography" - which ensures secret messages cannot be cracked by the highest of high-tech spies - could soon be ushered in by a global satellite system under development by British and American government scientists.....( Telegraph, 9 Oct 02) Will they put Trei's out of works,more the question.
