He unscrambled his first photo manually, then set about writing code to do it automatically.

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The two slivers of encoded bits are rejoined to the bigger, unscrambled video stream before it hits the home.

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Others scramble data that is only unscrambled when a fee is paid.

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Before the structure of DNA was unscrambled no-one had a clear idea how genetic replication - one of the cornerstones of life - worked.

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It feared that enabling the encryption would slow down response times as data was scrambled and unscrambled on a PC and Google's mail servers.

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