Wireless Quantum Crypto Announced

A system for wireless quantum cryptography has been announced by BBN. This is curious: I wonder how they manage the key exchange? They could be using a laser, I suppose, but that would only be line of sight, or would require airborne reflectors. Another possibility would be the EPR effect, but if they actually built a transmitter based on that they would probably win the Nobel Prize, so I’m doubtful. It will be interesting to learn more. Also, I wonder what the reaction will be over at MagiQ.