Author of "Mastering Bitcoin" and Bitcoin security expert Andreas Antonopoulos said in a series of tweets on December 4 that multinational computer software company Intuit said that to continue using the company's accounting services, Antonopoulos needs to be removed from its official website Cryptocurrency. Once Antonopoulos uses cryptocurrency, Intuit prevents him from accepting credit card payments through his Quickbooks product. "Intuit Merchant Services told me that if I accept invoicing for credit card payments, cryptocurrencies cannot be used. They asked me to remove cryptocurrencies from my website. In this case, I chose to remove Intuit and its credit card service from my life . "