Can you set authentication based on common values like first name or last name?

Authentication methods in online surveys or platforms like Qualtrics typically require unique identifiers to ensure that each user can be distinctly recognized. Common values such as first name or last name may not be adequate for this purpose, as multiple individuals can share these names, leading to ambiguity and potential security issues.

Setting authentication based on unique values, such as email addresses or user IDs, helps in verifying each person's identity and ensures that survey data is accurate and reliable. This requirement is essential for maintaining the integrity of responses and safeguarding sensitive information.

In some cases, combining common identifiers with other unique identifiers may enhance security, but alone, common identifiers do not meet the necessary criteria for reliable authentication. Hence, requiring a unique value for authentication is crucial in any data-collection process to uphold privacy and accuracy.