Pan-European payments and fintech specialists Sentenial have joined biometric authentication standards-setting body the Natural Security Alliance.As part of the partnership, Sentenial have implemented NSA's authentication standard in its Nuapay solution, saying this will enable shoppers and merchants to benefit from more secure direct debit transactions.”This announcement confirms the operational readiness of our authentication standard and its suitability for making all electronic transactions possible” commented CÉdric Hozanne, CEO of Natural Security Alliance. “Now direct debits can also benefit from the simplified user experience that makes transactions quick to carry out while guaranteeing explicit user consent.”Sentenial says that joining NSA will expand the scope of Nuapay, making it accessible for face-to-face direct debits at a physical the Point of Sale.