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. In 1877, starting from September, New York City residents began to have the opportunity to check the time on clock with the "time ball", located on the roof of constructed in the same year a new corporate headquarters - Western Union Building. In 1914 Western Union engineers invented the first payment card - a prototype of the modern credit card.