Hi @proal, data captured in the submission, review and/or decision forms is sourced to register a DOI. Currently, author information will be included as captured in the submission.$authorsfield.
As it stands, you’d need to fork the project to add more login options, which is not recommended, as it could lead to code conflicts with changes the kotahi team does.
We will be updating our libraries in the near future, which will add some goodies that will make an email login much easier.
We can maybe discuss implementation after that is done? This could either be planned and done directly by the kotahi team, or you could make a direct contribution to the project then? At the very least, implementation will be much easier if you wait a bit.