re illusion i missed the first article s on this line due to not having a chance to read the news for a couple of days the idea is commercialized in at least one product the private eye that s a small cube shaped device that the user straps around the head similar to a sweat band there is a boom that comes from the side on which the device is mounted so that it is positioned in front of the user s eye the private eye we had here for evaluation was hercules mda compatible the innards are a row leds that are swept up and down by a galvonometer like movement the result is that the sweeping led bar forms a fused raster there is a virtual image projected in front of the user that the visual system tends to fuse with the background i didn t like the device very much i found it easiest to use if i looked at a blank white wall i had problems with focus tracking if i glanced down to look at my keyboard for an out of the way key the unit also emitted a soft buzz and vibration which i found annoying some people didn t seem to mind the buzz properly used however the image clarity was quite crisp i don t know if the company has taken the technology any further in the last year or two but it did seem to have promise bill mayhew neoucom computer services department rootstown oh usa phone wtm uhura neoucom edu n wed
