According to the Berlin Group Implementation guidelines, there can be different methods for the PSU to carry out its strong authentication. VDK Bank is supporting the following one(s):

Redirect OAuth2 SCA Approach

The PSU is redirected from the TPP interface to a web browser in order to perform her/his SCA.

Redirect OAuth2 SCA Approach

To carry out its strong authentication on the ASPSP side, the PSU will be redirected from the TPP APP through several pages within the workflow described below.

Login Screen

AIS Signature Screen

Before being redirected to the TPP App, the PSU will access a redirection screen with some context related to the given authorisation. This screen is slightly different for AIS and PIS.

PIS Signature Screen

AIS Redirection Screen

PIS Redirection Screen