Actually, we use physical money to buy, sell and save it, this way is how we known the money: dollars and coins.
But today things have changed, the money, as we know it could change in the future.
Today, our money could have another name: Cryptocurrency. A cryptocurrency is a medium of exchange like normal currencies such as USD, but designed for the purpose of exchanging digital information through a process made possible by certain principles of cryptography. Cryptography is used to secure the transactions and to control the creation of new coins. The first cryptocurrency to be created was Bitcoin back in 2009. Today there are hundreds of other cryptocurrencies, often referred to as Altcoins.
To more information, you could visit, this links.
https://www.cryptocoinsnews.com/cryptocurrency/https://coinmarketcap.com/
