New Mexico Statutes 1-6C-5. Random identifier and verification code
A. Prior to each election, the administrator shall assign to each voter-participant eligible to vote in that election a random identifier and a verification code for use in that election only.
B. In the mailed absentee ballot or mailed ballot process, the random identifier shall be used in place of the voter-participant’s required voter identification and the verification code shall be used in place of the voter-participant’s signature.
C. At the same time a ballot is mailed to a voter-participant, the administrator shall separately send the voter-participant the verification code assigned to the voter-participant for that election, along with instructions to place the verification code where a voter normally provides a signature under the privacy flap of a mailed absentee ballot or mailed ballot.