Craig Martin addresses the transgressive or deviant aspects of design: design that straddles the divide between the licit and illicit, the legal and illegal, in a variety of ways. Through a series of case studies he explores a wide range of social practices that employ illicit forms of design thinking, including: early computer hacking and present-day hacker culture in which everyday objects are repurposed and deliberately misused; the cultures of reproduction, counterfeit and pirated versions of classic and luxury designs; and the use of material practices by smugglers to conceal drugs within consumer goods and luggage.