What is Strong Customer Authentication in PSD2? PSD2 has introduced major changes for European Payment Service Providers. The most eye-catching change—the introduction of access to payment accounts for third parties (known as “open banking”)—comes into force with the Regulatory Technical Standards (RTS) on Strong Customer Authentication (SCA) in September 2019. At that time, PSD2 requires organizations to use an SCA mechanism when a customer accesses her payment account or makes a payment that meets specifications set forth by the European Banking Authority
