KYC stands for “Know Your Customer”, which can be translated into German as “kenne deinen Kunden” (know your customer). This concerns, for example, legal requirements in connection with registration on crypto exchanges. In more and more countries, providers are obliged to carry out extensive legitimation procedures in order to check the identity of their customers. This is intended to prevent money laundering and simplify the possible prosecution of criminal users. This procedure is often carried out with identification procedures by video or identification at the post office.