[steveklabnik]

Incidentally, it was actually broader than "shoes with storage", she specifically did the project as a pentesting exercise. "If I was trying to hack a big company, how would I do it?" She made the connection between these styles of shoes and a specific outfit, and that the whole "sexy" thing would be a distraction, enabling her to sneak USB drives out of the shoes. They contained wifi-enabled equipment inside the shoes, with power, to automatically probe wireless networks around her. Etc.

So it's actually even more deeply technical than that summary lets on. You can find the exact description on her website if you're interested.