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Have you ever had an experience that you have a smart card but you do not know how much money was saved inside? Know Cash was designed to help people to read the credit from card directly. It was combined RFID technology and solar control panel together. It can be applied into a variety of cards such as public transport card and membership card so users may get information without touching the sensor machine or asking. It not only save more time but also remind clearly.
Wen Yuan Lee
Central Saint Martins
London, United Kingdom