N.C. Gen. Stat. § 125-19: Confidentiality of library user records.

(a) Disclosure. - A library shall not disclose any library record that identifies a person as having requested or obtained specific materials, information, or services, or as otherwise having used the library, except as provided for in subsection (b).

(b) Exceptions. - Library records may be disclosed in the following instances:

(1) When necessary for the reasonable operation of the library;

(2) Upon written consent of the user; or

(3) Pursuant to subpoena, court order, or where otherwise required by law. (1985, c. 486, s. 2.)