What is the role of SMS authentication in DocuSign?

SMS authentication in DocuSign plays a crucial role in verifying a user's identity. This method enhances security by ensuring that only authorized individuals can access and sign documents. When a user attempts to sign a document, they receive a text message with a unique code that they must enter to proceed. This two-factor authentication process significantly reduces the risk of unauthorized access and strengthens the overall integrity of the signing process.

Other options do not accurately represent the primary function of SMS authentication. While tracking document changes, providing reminders, or limiting access are important features within DocuSign, they do not relate to the specific security verification that SMS authentication provides for users during the signing process.