This reminds me of a technology from a couple of decades ago that seemed to disappear: wearable computer monitors. What ever happened to those?

Basically, you wore this thing like eyeglasses on your head, and it had a small arm that extended in front of your eye (but a little below it). When you looked down, it appeared like a computer monitor was hovering in front of you. The very early models were 320x200 resolution in monochrome (red on black), but I tried one at a trade show in 2000 that I think was 800x600 in VGA color, which at the time was pretty decent. I'm surprised these never got more popular; they would be great for laptop computers: you could have total privacy in your viewing (unlike a normal screen), and with improvements in the technology you could potentially "see" a much larger screen than a normal laptop has.

Does anyone else remember these?