Christmas is traditionally a time of giving, including to charities and the needy. But what happens when so few of us carry cash anymore?
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Articles on cashless payments
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Using less cash means leaving more digital traces of where your money goes - but there are ways to keep some privacy.
Coins have always conveyed a message and, helpfully for historians, they are anchored to a specific time and space. Rome's emperors used coins to push their political agendas.
As cashless societies become a reality, we're starting to see this technological revolution has a dark side.
