See also this issue from 2025 where the developers responded: https://gitlab.opencode.de/bmi/eudi-wallet/wallet-developmen...
AFAICT, there is no mention of an Apple or Google account being required in general - the documentation just lists "signals" that are used to securely authenticate a person - such as Google's/Apple's security ecosystems. I am not sure what this means in practice. Can anybody with deeper understanding explain the actual implications and possible outcomes?
(Note: BMI is the German Federal Ministry for the Interior)