Why Cryptocurrency. We have for centuries carried virtual cash like dollars, British pounds, Japanese yet and many others. Money sprung up when barter trade began to pause a problem. It happened that the needs of the seller and buyer rarely matched. There was also no method that one could store some commodities. They did rot and go bad. How one could tell how much wheat was equivalent to a cow soon paused problems. It were these problems that prompted use of cowrie shells which were used as money. Later after some time, coins and notes were introduced. They actually eased the problems of barter and cowrie shells. Money ESD used as a store of value, measure of value, a medium of exchange. We have been using this money but it paused problems too. It could easily be stolen. Countries vontrollend the money through Central Bank. Countries often corrupted the cash. It also became an expensive commodity. Of late, digital currency has entered the market. Types Of Cryptocurrency. There are many types of crypto online. We have bitcoin, ethereum, dogecoin, steem, steem dollars and many others. These currencies are what the present generations use. What Is Cryptocurrency? It is digital currency. It is normally controlled and managed by blockchain and ICO or Initial Coin Offer . Countries through the Central Bank have no control over them. The block chains create blocks which manage the currency. Why Digital Currency Is Gaining Popularity. They are not controlled by countries. They cannot be corrupted, manipulated or misappropriated by countries. One does not carry them in the wallet. They cannot be easily stolen by thieves. Investors in them get quick returns. Crypto can easily escalate in prices making it make quick profits to investors. Banks do not control it. It is hard for banks to reap much profit out of them. It is easy to start your own. These simple reasons make crypto a currency worth watching.