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=== Add value to contribution (status for example, see StackOverflow point system) ===
=== Add value to contribution (status for example, see StackOverflow point system) ===
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=== Supermarket Top Trumps ===
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A 3rd party app that feeds off the OFF product information to create the well known 'Top Trumps' game.
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E.g. two players compete by scanning products, they choose a category like 'salt content' and continue to play in the normal 'Top Trumps' fashion.
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On the occasions when missing data occurs while playing, the player is encouraged to contribute the data or lose that hand/trick in the game.
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This is just one example of a an app that could have a 'give/take' relationship with OFF
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Emphasis must be put into the seamless integration between the apps
See [[Project:Gamification]]
See [[Project:Gamification]]