U-Key

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A U-Key is an implementation of the MIFARE RFID chip, encased in a plastic key style housing. It is used as a prepayment system on vending machines[1] and for some self-service diving air compressors[2] in Switzerland, and they will be most likely made by Selecta (company).

References

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  2. ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).