In the never-ending arms race between secret-keepers and code-breakers, the laws of quantum mechanics seemed to have the potential to give secret-keepers the upper hand. 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.
Google and Intel, among a few other researching firms are currently working on making Quantum computing a reality. Google and Intel claim they are only about 4-5 years from having it all figured out.