Cash money that works anywhere, but is based on digital means.
My digital cash invention looks like a battery operated credit card, that displays the amount of cash. That amount of cash contained digitally therein can only be altered by tapping the card with another digital cash card that they may exchange digital cash sums. The cards have up and down patches that collect money exchange messages from the initiating card. so the user taps the patches in a sequence that generates the proper transfer.
The cards have a secret code, known only to each card and inserted into the cards with a blind process at the mint. Hence, digital cash can exchange securely only with other digital cash; thus, we hope counterfeit proof. The money industry manufacturers digital cash with zero balance. Then using debt instruments, banks can charge them up.
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