Abstract: A security system for a communications network includes a system which audits and monitors network activity for an intruder. The system also includes a circuit switch which makes and breaks a physical connection between an external portion of the communications network and a private portion of the communications network. The auditing and monitoring system is connected to the circuit switch, preferably through a back channel inaccessible to an intruder, to control the circuit switch to disconnect the intruder from the private portion of the communications network and to connect the intruder to a decoy in a substantially undetectable manner.

Abstract: A system in which a three-dimensional image of an object is stored in a data input device in the form of a family of points each defined by digital data representing the x-y-z Cartesian coordinates of the point. Digital signals derived from the data input device are applied through a digital interface to an electronic display on whose face is presented a two-dimensional image of the object constituted by pixels, the positions of which correspond to the x-y coordinates in the family of points. The interface functions to selectively activate each pixel to render it luminous. The selectively-activated luminous pixels are projected into a model space by a lens which is driven to rotate at a constant rate on an axle that is normal to the optical axis of the lens and is parallel to the display face whereby the angle of the lens relative to the face undergoes continuous change.