The KOIN mobile application can be downloaded by users for free and is the only way to interact with KNX tokens. The KNX token can only be used by members of the KOIN association. You become a member by successfully registering an account via the KOIN mobile application, free of charge. KNX is transferred directly from wallet to wallet using an `ownership consensus`, independent of banks or any other intermediary via the Internet or telephone connections or in the absence of such connections, by placing two mobile phones nearby using near field communication protocols (NFC).