Before there is no money,it only evolves to barter goods,fruits and livestock supplies in exchange with rice in our country.After that gold become a part of trading in exchange with goods,foods etc. And as we go through times fiat currencies exist we used to buy anything anywhere,everywhere.Then next was the automated machine or ATM,we can used it in any transactions and buying goods,and now we came to this digital stage the existence of cryptocurrencies that was so easy to use and  very convenience,with just few clicks on your cellular phones it was done.This was the evolution of money since then.