This yet another USA defaultism post. I have developed for several banks in Europe and EIDAS + other national ID based systems are the standard. Some also allo

This yet another USA defaultism post. I have developed for several banks in Europe and EIDAS + other national ID based systems are the standard. Some also allow authentication with their own apps, but still having alternate options smartcard with reader or smartcard based national app. Most seem to favour using apereo CAS for it even though it seems overkill and overly complicated (especially upgrading it, lacking documentation) most of the time.