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It is a small ring to help people count cash fastly,conveniently and correctly by hands, using the principle of IR scanning.Counting ring frees people who always have dealings with cash from the trouble of counting erroneosly and tiredly by hands.Besides, its size and usage makes it easy,cheap and portable,greatly enhancing the efficiency in currency transaction.With the same principle,Counting Ring could also be used to count print paper files ,this would definitely bring great convenience to people who always do print affairs.
Hansen Wei, Shaochen Li, Jinrui Xu, Yibin Qi