Several countries have either implemented or are in the process of developing digital currencies. Some notable examples include:
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China: The People's Bank of China has been testing its digital currency electronic payment (DCEP) system in various cities.
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The Bahamas: The Central Bank of The Bahamas launched the Sand Dollar, the world's first central bank digital currency (CBDC) in October 2020.
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Sweden: The Riksbank, Sweden's central bank, has been exploring the possibility of introducing an e-krona as a digital complement to cash.
These are just a few examples of countries that have made advancements in the development of digital currencies.