Help America Vote Verification

Overview
Help America Vote Verification (HAVV) provides to the American Association of Motor Vehicle Administrators (AAMVA) verifications of the last four digits of Social Security numbers of voter registrants who do not have driver's licenses for use by state AAMVA partners to register new voters.

Source

 * Information Technology: Social Security Administration's Data Exchanges Support Current Programs, but Better Planning Is Needed to Meet Future Demands, at 7.