Thanks for the advice. I'm glad I'm not the only person who has had problems in this area.
I've tried walking around the halls with a laptop. Like you say, it works, but is far from the ideal solution (it's not very discrete either
).
I'm curious to find out what other 'experts' thing of the hardware solutions I suggested. Perhaps the ideal option would be a combination of the two?
One possibility I guess would be to test it. Plant one person with a wireless device running in ad-hoc mode and have another trying to locate him (similar to the "Running Man" competition run by Thorn). If we find the running man then we have our solution. I'd be willing to try this out with my personal equipment (PDA) before spending company money, one thing I don't have access to is an antenna however, so I won't be able to determin whether or not this will offer a great advantage over the PDA.