What is the function of a secure PIN in the mDL app?

The function of a secure PIN in the mDL app is to unlock the GET Mobile ID app. This adds a layer of security, ensuring that only authorized users can access their mobile driver's license information. By requiring a PIN, the application helps protect sensitive personal information stored in the app from unauthorized access, similar to how PINs safeguard banking applications and other sensitive software. This emphasizes the importance of user security and personal privacy in digital identity management.