First Bank Transfer via Quantum Cryptography
An anonymous reader writes with today's announcement that "the Austrian project for Quantum Cryptography made the world's first Bank Transfer via Quantum Cryptography Based on Entangled Photons; see also Einstein-Podolski-Rosen Paradoxon." (For more background, see the recent Slashdot post "Quantum Cryptography Leaving the Lab.")
because you wouldn't know which photons contain the data. as soon as you touch it, the other end knows it's datastream has been tampered with.
This is a good overview.
I post links to stuff here