In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. Payment systems are one of basic elements of infrastructure of e-commerce. In 2000 was launched the Web site westernunion.com, with which users from certain countries can independently transfer funds online. In 1884 Western Union has become a joint-stock company and was brought to the stock exchange. The company has entered in the first American stock index Dow Jones.