Hooray for Quantum Physics

Quantum cryptography guarantees secure communications by harnessing the quantum quirks of photons sent between users. Any attempt to intercept the photons will disturb their quantum state and raise the alarm.

But Elliott points out that even quantum cryptography "does not give you 100 per cent security". Although quantum keys are theoretically impossible to intercept without detection, implementing them in the real world presents hackers with several potential ways to listen in unobserved.

One example is if a laser inadvertently produces more than one photon, which happens occasionally. An eavesdroppper could potentially siphon off the extra photons and decrypt the key, although no one has actually done this.

YaY. Secure computing...

Now make me a time machine!!!