This plugin modifies the standard login process for a content management system to accept a custom user field as the primary credential. It is designed for site administrators who need to authenticate users with specific identifiers, such as a mobile number for a membership site or a national ID for a government portal.

• Custom Login Field Selection: Choose any existing custom user field created with Advanced Custom Fields to serve as the login credential.
• Flexible Authentication: Users can log in using the selected custom field value, bypassing the default requirement for a username or email address.
• Simple Configuration: The setup involves selecting the desired field from a settings page, with no need for code modifications in most cases.
• Maintains Standard Security: The plugin integrates with the platform's native authentication system, preserving existing password security and session management.
• Reversible Installation: The login method can be reverted by deactivating the plugin or clearing the field selection via a provided command, allowing for easy rollback if needed.