Currency exchange has existed since ancient times when travelling from one state to another traders and ordinary people needed to convert one type of coins into the other. At present days we have several levels of money exchange starting from an ATM and ending with forex market. However, real cash is not the only currency we need because in the world of rapidly developing ecommerce people use electronic currencies which can also be converted in multiple directions: an ecurrency can be exchanged into real money or into another ecurrency unit.