In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. Western Union offers one of the easiest ways for families and friends to send money and stay connected almost anywhere in the world. Another invention of Western Union - time synchronization. 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. In 1914 Western Union engineers invented the first payment card - a prototype of the modern credit card. Western Union made so that the time in all of American civil services was the same.