Before revision:  This new perspective is visually represented through a cube  where each of its three axes of variability captures, respectively: principles, rights , and usability criteria. In this way, our model, called Usable Privacy Cube (or UP Cube), brings out two perspectives on privacy: that of the data subjects and that of the controllers/processors.
After revision:  This new perspective is visually represented through a cube where each of its three axes of variability captures, respectively: rights of the data subjects and that of the controllers/processors.