digitalwanderer
Legend
UPDATE: http://www.theinquirer.net/?article=22762
Some of the technobabble that the professor spouted to out the thief was impressive, but has not been found to work well yet.
He claimed that there were passive trackers embedded in the bezel of laptop screens beside the wireless transmitters. Technology like this does sort of exist, but is rare and not used by anyone outside the Department of Energy.
He also claimed that the wireless card in the laptop triggered some location data. This is possible, but pretty unlikely.
In fact a University spokesman told ABC that Rine had indeed made the whole thing up to scare the student into handing over the laptop. The story has for some reason now been pulled from the ABC site, but can be found here. There might be a bit of a clue as to the way Rine operates in an article here, in which he says: "Although I have unlimited respect for facts, and delight in their discovery and appreciation, I have come to the obvious yet almost blasphemous view that, with respect to teaching, the facts just aren't that important."
Despite all the exaggeration, and threats, the thief has ignored Rine and has kept his laptop. Still it was worth a crack.