Why Does One of My Credential Login Fields Need to be Unique?

Why Does One of My Credential Login Fields Need to be Unique?

Login fields can be found under CONFIGURATION > CREDENTIALS from the sidebar navigation. 

Whatever is set as Login 1 and Login 2 will be the login fields for the voter. Any enabled field used to identify a voter can be selected as one of the login fields. One of your login fields must be UNIQUE. The system must be able to uniquely identify the voter when they sign in to vote to ensure they get their ballot - and only their ballot.

In any database or spreadsheet, you will have rows and columns for the storage of information. One row represents information about a single person: first name, last name, member number, email, etc. For example, you have 5 persons who are all different individuals. To any human that fact is obvious, but to computer software that is far from obvious. Computers simply do not have ability to understand the context and to decide if we are talking about 5 different, or 5 of the same persons, even though there are 5 lines of information.

So we need a piece of information that is different for every of these persons. That piece of information is UID or unique identifier and one of the columns (for example: member number) must have unique values. No 2 records can have the same value in the UID column. The record will be rejected if it is a duplicate value, and will have to be given a new one.