Classic Physics produces similar Cryptography to Quantum, or so they say..

Thanks to Linuxsecurity.com for their post about this Wired article. Quantum-like cryptography for half the price using run of the mill physics seems like a really cool concept, even if the concept is a little over my head. Using the noise present in resistors seems sound in theory, but even resistors at the same Ohm value slightly differ, causing the noise generated on each side to slightly differ (very minute amount) so I am assuming there is a slight margin for error. Based on the papers, it doesn’t look like they have a practical application of this yet, but it’s a pretty cool-sounding idea if it actually works. Maybe someone a little more knowledgeable in physics can explain this…