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Cash is a safe and highly liquid instrument for the payment of goods and services. As legal tender, cash fulfills the functions of unit of account, means of exchange and store of value. The amount of cash issuance remains high in Japan despite the declining use of cash — accounting for about 20% of nominal gross domestic product.
Cash becomes more useful when natural disasters or military conflicts cause serious damage to communities – for example, via power shortages or the destruction of buildings and computer systems or by weakening trust in the private-sector banking system.
From Central bank digital currency cast aside in Japan – Asia Times.
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