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 security token that changes the passphrase with each logon, but charges the account holder USD $99.50 for the token. E-bullion does not require customers to use the Cryptocard, so account holders who choose not to get one may suffer from the same security issues as e-gold customers. Pecunix devised a unique rotating key system that provides many of the benefits of a security token without requiring the user to buy one. Pecunix also supports the use of PGP signatures to access an account, which is probably the strongest of all authentication methods. Digital gold currency is a form of representative