Digital currency bitcoin is a digital currency but also a type of virtual currency. Bitcoin and its alternatives are based on cryptographic algorithms, so these kinds of virtual currencies are also called cryptocurrencies. Most of the traditional money supply is bank money held on computers. This is also considered digital currency. One could argue that our increasingly cashless society means that all currencies are becoming digital, but they are not presented to us as such. Currency can be exchanged electronically using debit cards and credit cards using electronic funds transfer at point of sale. A number of electronic money systems use contactless
Currency War of 2009–11 intervening on a wider scale back in 2009. George Soros expressed concern saying "I share the growing concern about the misalignment of currencies. Brazil’s finance minister speaks of a latent currency war, and he is not far off the mark. It is in the currency markets where different economic policies and different economic and political systems interact and clash." Considerable attention had been focused on China. For much of 2009 and 2010, China has been under pressure from the US to allow the yuan to appreciate. Between June and October 2010, China allowed a 2% appreciation of the yuan, but