In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. In 1914 Western Union engineers invented the first payment card - a prototype of the modern credit card. In 1849, Selden and Sibley, the founders of the future Western Union, created the New York State Printing Telegraph Company. In the 1910-1920 years. Western Union is actively engaged in researching, innovating in the field of data transmission. Western Union made so that the time in all of American civil services was the same.