(1) A covered voter may use a digital signature as proof that the voter is the sender when the voter is electronically transmitting any of the following documents to an election administrator pursuant to this chapter:
(a) a federal postcard application;
(b) an application for voter registration;
(c) a request for an absentee ballot; or
(d) the voter's marked ballot.
(2) An election administrator shall verify a digital signature received pursuant to this section and accept a validated digital signature as proof that a document has been transmitted by the voter.
(3) Nothing in this section may be interpreted as:
(a) requiring a covered voter to use a digital signature;
(b) requiring that an election administrator use a digital signature in lieu of the voter's date of birth and social security number or driver's license number to validate the voter's identity during the voter registration process;
(c) requiring a county election administrator or the secretary of state to validate the voter's identity with the certificate authority that issued the digital signature;
(d) requiring both a valid digital signature and the last four digits of a voter's social security number as proof that a document is from the voter; or
(e) prohibiting a county election administrator from using the last four digits of a voter's social security number, if provided on the document, to verify that the document was sent by the voter.