I am currently trying to implement a login flow in which a customer should enter 1 additional field (e.g. company registration number) on the Login screen. What is the most straightforward way to do that? Is there a proper way to achieve that using Universal Login?
Please note that I should not only add the field to the screen itself, but also validate the user against that field.
Unfortunately, we only offer an option for additional sign up fields out of the box, see: Lock Configuration Options
As far as I’m aware the only option for adding an additional login field will be to build the UI out yourself and providing the custom field for users to fill out while using the Authentication API or Auth0.js for the login mechanism.