Field Permissions Module

The Field Permissions Module enables site builders and site administrators to control create, edit, and view, permissions at the field level for any module. There are other modules that control access permissions at the entity and/or node level, but this module implements access control at a more granular level. It seems like those module would have plentiful application utility for a variety of site types where visitors, users, and even control creator access can benefit from access control beyond an all or nothing full administrator content creation and editing access. This module also has a full release version available for Drupal 7 sites.