h a l f b a k e r y
Number one on the no-fly list
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
or get an account
Shades with a built-in LCD-based 'bar-chart' - that shows the strength of any nearby wi-fi signals.
To keep the size down, maybe the shades would be blue-tooth based, with the actual detector on a keyring or something.