N.J. Stat. § 19:31-26
The commissioner may make and maintain a card index file showing on separate cards the full name, address, birth date, driver's license number, last four digits of the social security number, or unique identifying number, municipality, ward and district, registration number and date of registration of each person registered in his county. This file shall be arranged alphabetically according to names irrespective of municipality, ward, district, registration number, and date of registration. Reasonably sufficient space shall be reserved on each card for the notations to be made thereon as herein provided.
The commissioner shall cause to be made notation on these cards as to each registrant respectively whose registration forms have been transferred from one register to another or to the inactive, death or conviction files concurrently with such transfer. The card with such notations shall show the location of the registration forms of each registrant at all times. All changes of address of the registrant, including those within the same district, shall be noted on these cards concurrently with changes of address on the registration forms.
N.J.S. § 19:31-26