What is the purpose of marking an attribute as hidden?

Marking an attribute as hidden serves to ensure that it is not visible to subscribers in the Profile Center. This is an important feature when you want to control which data points subscribers can see or modify. By hiding certain attributes, you can maintain privacy or compliance with data handling regulations while still collecting the necessary information for segmentation, personalization, or reporting purposes. For example, sensitive information or internal identifiers should be kept hidden to maintain security and to ensure that subscribers can only access and edit their personal information as needed.

In context, attributes that are hidden still exist within the system and can be utilized for business logic, but they do not clutter the user interface for subscribers who may not need to see or interact with them. This ensures a cleaner user experience and protects data integrity.