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Not all key organizers work with all keys. Not all key organizers work with all keys.

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If you wish to organize car keys or larger items a folding wallet-style organizer is.

. If you wish to organize car keys or larger items a folding wallet-style organizer is. Some key fob devices called passive key fobs have no need for a battery because they are powered by the magnetic energy transmitted between the antenna and the reader. Many of todays key fobs do use a battery but these watch cell-style batteries last a long time before needing to be changed.

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