Laws of Physics Say Quantum Cryptography Is Unhackable. It's Not http://ifttt.com/images/no_image_card.png

A technique called quantum cryptography can, in principle, allow you to encrypt a message in such a way that it would never be read by anyone whose eyes it isn?t for. But in recent years, methods that were once thought to be fundamentally unbreakable have been shown to be anything but. Because of machine errors or other quirks, even quantum cryptography has its limits.



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