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 the extent of hostility, but the term has been widely used by the media since Brazil's finance ministers Guido Mantega September 2010 announcement that a "currency war" had broken out. Other commentators including world statesmen such as Manmohan Singh and Guido Mantega suggested a "currency war" was indeed underway and that the leading participants are China and the US, though since 2009 many other states have been taking measures to either devalue or at least check the appreciation of their currencies. The US does not acknowledge that it is practicing competitive devaluation and its official policy is to let the