Bitcoin was the first crypto currency with the goal of creating a payment system that works without financial institutions. This should enable consumers a certain degree of informational self-determination and anonymity. Crypto-currencies can be used for much more than just financial transactions, as they provide a secure, fast and cost-efficient alternative for the transmission of sensitive data. The United Nations World Food Programme used Ethereum in a pilot project to distribute resources to refugees. The Blockchain is used to issue food coupons that enable those affected to pay by iris scan in refugee camps. In this way, the financial resources reach the needy directly and corruption is no longer a problem for the organisation.