I'm appalled at the number of "if you don't want it seen, don't flaunt it" posts in response to this article. What happened to a reasonable expectation of privacy? If the person wearing the skirt wanted their underwear (or lack thereof) seen, do you not think they'd remove the skirt themselves? Sure, it's not "illegal", but is it seriously that hard to respect the boundaries of another human being?

Except the poster mentions learning the API for Windows ... they mention a PC, but don't mention which operating system, so this solution might not fit.