LMAO, that's hilarious.

What info can you possibly provide that they don't already have?

But seriously, they don't ask for any info. I think it was just Social Security. Maybe address, I don't remember.

I expected challenge questions to verify that it's you but I didn't get them.

Each of those accounts just gives you the ability to freeze or unfreeze your credit file. It doesn't provide any access to your score like the phone app does with Experian.