In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. 1980 - for the first time in the history of Western Union revenues from money transfers exceeded the income from the telegraph service. In 1920, Western Union has implemented the world's first transmission of images over the ocean. The size of the commission fee for the transfer is charged according to the Western Union tariffs and depends on the amount of money sent. Payment systems are one of basic elements of infrastructure of e-commerce.