The unbreakable code: Is this the lock?

You wouldn’t trust a device sold by your enemy to establish a secret code with your friends, would you? And yet, you should – if the device is suitably based on quantum physics.

You wouldn't trust a device sold by your enemy to establish a secret code with your friends, would you? And yet, you should – if the device is suitably based on quantum physics. Learn how we got there in a Strait Times article.