Dinube, a European payment network that enables consumers to replace credit/debit cards with a mix of biometrics, NFC and their smartphones has announced a rollout of its technology by European supermarket chain BonPreu.Available from today at 170 new locations, the BonPreu chain will offer the Dinube service, which was developed by MIT graduate Jonathan Hayes.Dinube links directly to a user's bank account, which means users do not have to own a credit/debit card or pay cardholder fees. Reported by Finextra, the 100% digital solution instantly stores full receipts and loyalty card information in the cloud. Users can retrieve all their purchasing data simply by logging into the network. Additionally, Dinube's unique tokenization system is used in combination with the smartphone fingerprint scan to ensure maximum security for in-store and online customers alike.The company's network is currently built into the payment gateway operated by Informática El Corte InglÉs, the IT services arm of Europe's largest department store group, El Corte InglÉs , as well as the contactless NFC pinpads of Ingenico Group, a major force in payment solutions.Dinube's model doesn't require any new hardware and only charges businesses a flat transaction fee for purchases over 10 Euros. Smaller transactions are reportedly free.