With the MediaConsent extension to Kontainer, you will become GDPR compliant in your image management. The system helps you create users, tag them in photos and scan your image archive to find peoples in photos with auto-match and person tagging.
With the simple rights management you can specify what media files may be used for, and when the consent expires. Then you will be automatically notified when consent expires, and with the advanced search in Kontainer, you can search for a specific purpose for the image usage, and then the user will only see the images that may be used for this purpose.