[cctalk] Old UNIX Systems

3M developed something very nearly a combination of touchscreen and display projector in the late '90s. I was working for the applied archaeology labs at University of Texas and we got a demo/market-test model. It was one of those things that everybody went "Ooooh SHINEY", got all excited, then had zero use for. Accordingly, my memory of it is very hazy. Mostly what I remember was that the Windows-only software was a clusterf**k to use and nobody would sit still to get trained to it, so the thing sat in the corner. It looked like a big whiteboard on wheels, connected via serial(?) cable to the computer. The projector displayed the Windows desktop on the board and there were special markers to draw with. The board recorded marker strokes to something resembling a PowerPoint presentation. IF, that is, I remember correctly. Does anyone remember such a thing? Did 3M ever bring it out as a product? Doc