About: Allows automatic identification in a gallery without having to provide a login and a password, and allows creation of an account having immediately access to some private content.
Thus allows you, after an event where you have been THE photographer, to share your pictures very easily with people not (yet) being registered on your gallery, but still publishing your pictures in a _private_ category. But there can be also other usages ;-) ...
LOOK OUT : the automatic identification is very poor about security ! To be used smartly.
To use this plugin on a gallery displayed with another language than french or english, you just need to translate the file ./language/en_UK/duplic.lang.php . Only in this file is there content displayed to visitors. The rest of the plugin can be viewed only in admisitration part, thus will be displayed in english only to administrators.
But of course, I'm very interested in any full translation :-) !