The devil and the details
Source: Economist - Posted by Dave Wreski   
Cryptography Quantum cryptography has yet to deliver a truly unbreakable way of sending messages. Quantum entanglement may change that. RECENT revelations of online snooping on an epic scale, by government agencies which may well have been breaking the law, have prompted some users of the internet to ask who you can trust with sensitive data these days. According to Artur Ekert, an Oxford academic who moonlights as director of the Centre for Quantum Technologies (CQT) in Singapore, one possibility is a defunct Irish physicist called John Stewart Bell.

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