How your phone hooks you: dopamine, infinite scroll and the slot machine in your pocket
Red badges: why the little red dot on your apps is so hard to ignore
A red dot with a number on an app tells you almost nothing. Still, in a test with about a thousand people, one small dot changed which app many of them would tap first.
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This red dot is called a badge. The number counts things the app wants you to see.
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But it does not say what the 3 things are. A message from a friend? A great joke? Or nothing much?
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