Abstract: A hack-proof computer interface between a public-side operating system and a private-side operating system utilizing a “King's food taster” approach. A public-side operating system is exposed to the outside world, while a private-side operating system is isolated from the outside world except through the hack-proof interface. This effectively prevents infection of the private-side operating system with viruses or other computer malware from the outside world. The hack-proof interface includes a bitmap-coupled interface, such as a camera capturing a video image of the visible computer screen public-side operating system. A security device, such as a video scrambler or security lens, distorts or decimates the video image sufficiently to prevent active virus code from passing through the bitmap-coupled interface.

Abstract: A hack-proof computer interface between a public-side operating system and a private-side operating system utilizing a “King's food taster” approach. A public-side operating system is exposed to the outside world, while a private-side operating system is isolated from the outside world except through the hack-proof interface. This effectively prevents infection of the private-side operating system with viruses or other computer malware from the outside world. The hack-proof interface includes a bitmap-coupled interface, such as a camera capturing a video image of the visible computer screen public-side operating system. A security device, such as a video scrambler or security lens, distorts or decimates the video image sufficiently to prevent active virus code from passing through the bitmap-coupled interface.