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
Digital gold currency use of the digital currency for daily monetary transactions, even though most of their normal income and expenses are denominated in the national currency of their home country. Fluctuations in the value of gold against their national currency can create some confusion and difficulty for new users as they see the "value" of their DGC account fluctuate in terms of their native currency. In contrast to exchange risk, caused by gold's fluctuation against national currency, the purchasing power of gold (and therefore DGCs) is measured by its fluctuation against other commodities, goods and services. Since gold has historically been the