Electronic money or e-money, is an evolving term that can have different meanings but in principle involves the use of computer networks and digital stored value systems to store and transmit money. It may have official legal status or not. It may be historical, current or theoretical. The underlying principle of electronic money involves the use of computer networks such as the Internet and digital stored value systems. Examples of electronic money are bank deposits, electronic funds transfer, direct deposit, payment processors, and digital currencies. Electronic money can be understood as a way of storing and transmitting conventional money through electronic systems or as digital currency which varies in value and is tradeable as a currency in its own right.