Enter the amount you want to buy, and click «Buy Bitcoin Instantly». On the other hand, the digital cash represents tokens such as Bitcoin, Ethereum, etc. Just like any information you give up online, there is always the risk that it can be hacked or stolen from the website you give it to. The steps are the same, as you have to open an account in your preferred exchange and follow the process as outlined under credit card transactions. Debit cards appear to still be working. However, the credit card can increase the credit line if the exchange is considered as a purchase to enable you to spend more on Bitcoin exchange.