Million dollar idea: The Smiley Face
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The BBC's Aaron Heslehurst on the story behind the Smiley

The Smiley Face is the world's Number One emoji.

It earns its copyright holder more than a £100m a year. But the man who first came up with it lost out big-time. BBC presenter Aaron Heslehurst tells the bitter-sweet story behind the Smiley.

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