Any way to get a guid of a user just from their username?
Is there any way to get the guid of a user without them authorizing the application? Say I am not email@example.com, but I would like to know the guid of firstname.lastname@example.org. Is there any way for me to figure that out?
Can this be automated? Meaning, I just want to find out uid of a Yahoo email within my program (not web based). Do I still have to go through OAuth? If yes, can I do OAuth without requiring user login? I have been trying to get this to work for a while without any success. Any help will be greatly appreciated.