Tenn. Code Ann. § 48-101-512

It is the duty of every charitable organization to furnish identification to persons who solicit contributions from the public on behalf of the charitable organization, including, but not limited to, those persons soliciting on behalf of an exempt organization or nonexempt organization and all professional solicitors. The solicitor shall be required to have and produce or display, on demand, identification indicating that the solicitor has been duly authorized by the organization for which the solicitor is soliciting. Such identification shall include, but not be limited to, the name of the holder of the identification and the name and the registration number of the charitable organization.