Working Quantum Encryption System Hailed as Unbreakable
Quantum encryption uses photons to deliver encryption keys
The system sends faint beams of light containing single photons fired a million times per second from which a numerical key can be recovered. The advantage of the system is that if anyone eavesdrops on the communication between nodes the key is disturbed and the node shuts down. At the same time the hacked node shuts down the network is routed to another node to keep it running.