g1smd - 5:51 pm on Sep 23, 2010 (gmt 0)
While the technology sounds great, the actual work "take item from the shelf with the indicator light on it, and place it on the tray with the indicator light on it" requires nothing more than untrained monkeys following flashing lights.
Beware that your business may end up with a workforce unable to think for itself at any level, and that is a huge danger when anything goes wrong. There's no one left with any clue what to do when the lights stop flashing.
This also sounds like the job from hell, and I would be concerned that such a job would ultimately lead to depression and mental illness in the workforce.