Re: BBC Micros at college
My alternative was less hi-tech. At Uni (sorry guys) I wrote a simple program that looked exactly like the login system (custom screen, easy to mimic and logged out the current user, me, after recording login details) and ran around a computer room or two, logged in as myself, ran this application and merrily harvested the login details of countless students and staff. They had a bit of a sense of humour failure (sorry, again) when I presented this list to them - including a sys admin login or two.
Students. We were probably all dicks at some point in time.
Oh, and I also worked out how to get free laser printing.