Indiana Code Title 3. Elections § 3-11-15-26

Sec. 26. (a) The ballot counting software must be designed in a modular fashion and not be self-modifying.  Modular programs must consist of code written in relatively small and easily identifiable sections, with each unit having a single entry point and a single exit point.  Each module must have a specific function that can be tested and verified more or less independently of the remainder of the code.

(b) A voting system may include a retraction feature that allows a vote cast on an absentee ballot that is:

(c) The retraction feature described in subsection (b) must assign a unique identification number to each absentee ballot.  The unique identification number assigned to an absentee ballot may not include any of the following information about the voter who cast the absentee ballot:

(d) A county election board must implement a procedure to keep the unique identification number described in this section secure from unauthorized access.  All unique identification numbers and any list that contains a unique identification number is exempt from disclosure, inspection, or copying under IC 5-14-3-4(b)(10).