// handle photos from certain users, photos with a specific tag, etc.
interface AlbumWidget {
}

//
interface Photo {
        User getOwner();
    List<String> getTags();
        int getRating();
    void addTag();
        void removeTag();
}

interface PhotoWidget {
}

// functionality for a user
interface User {
    List<Photo> getPhotos();
        List<Photo> getPrivatePhotos();
        List<Photo> getPublicPhotos();
        List<Photo> getPhotosByTag(String tag);
        List<Device> getDevices(); //Possibly?
        void addPhoto();
        void removePhoto();
        void addDevice();
        void removeDevice();
}

// Handles the device, if we are going to do that.
interface Device {
    String getMacAddress();
    String getOperatingSystem();
}

interface UserWidget {
}