Zeroing in on unbreakable computer security

Tapping the strange science of quantum mechanics, physicists are creating new data security protocols that even the NSA can't crack.

The news out of Moscow of late has been dominated by Edward Snowden, the American leaker of secret state documents who is currently seeking temporary asylum in Russia. Meanwhile, across town and to much less fanfare, Dr. Nicolas Gisin found himself explaining last week the solution to the very problems of data security and privacy intrusion Snowden brought to light in exposing the vast reach of the National Security Agency's data collection tools: data encryption that is unbreakable now and will remain unbreakable in the future.

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