It seems a bit odd to me, but apparently you don't receive a library card in NC the instant you apply for one.
I went to a local library the other day, told the lady working at the front desk that I wanted to apply for a card, and gave her my driver's license to verify my name and address. I completely understand why they want your ID. What I don't understand is why you have to wait for a card to be mailed to you in a few days.
She actually retrieved a new card from a drawer and scanned it with my information, so it was ready to go at that moment. Yet, I had to address an envelope to myself so she could mail it to me a few days later.
If you've got a current driver's license, is it really necessary to go through those extra (annoying) steps? I mean, who's going to lie about where they live just so they can obtain a library card? Why would you even want one for a county that you don't live in (or near)?
Maybe I'm just not thinking like a criminal.