FITBIT TRACKER 2009

These days, fitness-focused activity trackers make up an industry worth billions of pounds, but back in 2009, things were very different.

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Then along came the Fitbit Tracker, a tiny clip-on device that changed everything. The idea was to make your health quantifiable, and therefore give you the knowledge you needed to improve it, all with enough battery life to last a week on a charge. To do that, t