Sec. 4. (a) A mail registration form prescribed under section 3 of this chapter may only require information necessary to enable the county voter registration office to do the following:
(1) Assess the eligibility of the applicant, including the eligibility of the applicant under 52 U.S.C. 21083.
(2) Administer the voter registration and election process.
(b) The information required under subsection (a) may include the following:
(1) The signature of the applicant.
(2) Data relating to previous registration by the applicant.
(c) The form may not include any requirement for notarization or other formal authentication.