B-Id converts payment cards into multi-purpose high-end tools in ISO format Fingerprint sensors in combination with NFC and BLE offer security in block chain applications. The progressive adaptation of online payment methods is constantly placing higher demands on fast, secure and flexible payment methods. Yiwen Jin, managing director of B-Id, reports: "Blockchain applications are increasingly being used in the private sector as well. Crypto currencies offer new opportunities and possibilities for payment, but at the same time present new challenges for manufacturers and service providers. Now there is a solution for this that is easy to use and still offers maximum security".