SPYING is big business, and avoiding being spied on an even bigger one. So imagine if someone came up with a simple, cheap way of encrypting messages that is almost impossible to hack into?
American computer engineer Laszlo Kish at Texas A&M University in College Station claims to have done just that. He says the thermal properties of a simple wire can be exploited to create a secure communications channel, one that outperforms quantum cryptography keys.
His cipher device, which he first proposed in 2005, exploits a property called thermal noise. Thermal noise is generated by the natural agitation of…
