The Volume Slicing Display is a device enabling the interactive exploration of volumetric data (e.g. medical images) using a piece of Plexiglass or paper that functions both as a control interface and as a passive, untethered projection screen. With the VSD, radiologists would be able to retrieve a certain amount of three-dimensionality from a flat X-ray plate at any time, by just touching certain portions of the screen, orientating and manipulating it freely above a calibrated projector. It is interesting to note that such interface could solve another important issue, that of the confidentiality of the patient data, since without the machine the piece of paper will only show an undecipherable 2d-barcode identifying the patient.