Do you have to have ID to ride

I showed up to pick up my ticket today, and while there is a sign that says that ID is requieres. I had it ready to go but he just asked for the confirmation number and for my name.

It's much cheaper and easier to purchase your ticket online. They accept gift cards, and you have the option of printing your ticket at home or a library or picking it up at the station with your ID or answer a sercurity question.