Bitcoin security expert Andreas Antonopoulos said at the Coinscrum party in London's Monzo Bank headquarters that the killer application in the blockchain open ecosystem is a solid currency and governance. He also examines the basic elitism of many people who believe that cryptocurrencies are meaningless tools that are “not needed”, but they do not take into account the broader needs of billions of people living in various environments. Antonopoulos said: "If it doesn't work for you, that doesn't mean it's useless. It just means that you are privileged in that particular area. You hear Warren Buffett say 'I don't Need to encrypt', he certainly doesn't need it, he has billions of dollars. Has he ever been denied bank services? It's unlikely."