How to box-select only the faces completely within the box?

I just stumbled on this “old” problem and just wanted to note that the addon is unfortunately not working anymore
BUT
what solved the problem at least for me was that if you disable limit selection to visible (=XRay) you can cross a face with lasso/box select and it wot get selected until you include its center in the selection. Maybe that helps anyone.

Greetings, Ello