Despite their well-earned reputation for being luddites, most lawyers know by now that information relevant to a particular lawsuit often resides in email, text messages, and traditional social networks like Facebook. While such a “small step” for lawyers is certainly a positive, it also obscures the fact that there are many other, less obvious sources holding relevant electronic data. Many of these sources – including global positioning system (GPS) devices and electronic toll transponders – are often overlooked in discovery even though lawyers use them daily in their personal lives or practices.