The first network protected by quantum encryption has gone live at a scientific conference in Vienna...
The quantum cryptography systems rely on an application of the Heisenberg Uncertainty Principle, which broadly states that it is impossible to observe quantum information without altering it.
This makes eavesdropping impossible, since as soon as it takes place the change in data can be recognised and the network shut down. (more)
FutureWatch – Fistfights between network operators and governments demanding surveillance capabilities. Result: This level of protection may never trickle down to the average user of data services unless a back-door compromise can be reached. — Retrospect
