In a process of re-designing our website we are looking to implement 'Remember Me' feature that requires a local data call to retrieve username and password based on a customer number. Please let me know if you have one to share ?
Thanks,
Sabina
Have you checked out the API method LoginEx2 - it supports using customer_no and password to login. Once logged in, you can use GetConstituentInfoEx to return an extensive dataset.
That answer isn't quite what you were looking for but hopefully it is useful in some manner :)