i have to decide to change a little bit in the hardware development.
in the proposal, i did suggest to set a certain amount of budget that each customer wants.
unfortunately, it will cost more since 1 rfid card only can be used for 1 customer only.
it will be wasted because not all the customers will want to plan their budget with the same amount over and over again.
hence, to make more easily, my friend said, how about instead of using the rfid card, we just simply use a keypad to set the budget plan. the rfid reader is still use to enhance the barcode.
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| example of keypad that will use |