One of the first types of long-distance communication is the use of Morse code. These were in the Second World War one and two for espionage, and in conversation with other concentrations used in the Allied troops. This proved to be a weak form of communication, because the signal can easily be intercepted by the enemy. As a result, codes were for signals, which would of course be broken in time, but the code is more efficient than the hackers were breaking into their code to be complicated.
The phonewas a major breakthrough and is still considered the main form of long-distance communication. However, it is now used as a portable device in the form of a mobile phone. The most impressive thing is that it enables communication to verbal what you can with one person on the other side of the planet or even speak of the moon, if you emit a signal that is strong enough so far.
In the past two decades, the Internet has revolutionized our human interactions.It basically reduced because you can now send digital messages in seconds to anyone anywhere on the planet, if they have a connection to the Internet. In future I am sure that further breakthroughs in technology mean that people of sight, perhaps not completely necessary, because it could be done through holographic images. This is not a form of communication that is far from ready for public use, because the technology is simply not thereyet.
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