pocket litter
n.— «Because the format of the data in the current database is “complex, undocumented, and brittle,” some significant data will be lost when the system is replaced by Railhead, according to the congressional report. For example, scraps of information such as phone and credit-card numbers found when law-enforcement and intelligence officials empty a suspect’s pocket, often called “pocket litter,” will not be moved to the new system.» —“Flaws Found In Watch List For Terrorists” by Siobhan Gorman Wall Street Journal Aug. 22, 2008. (source: Double-Tongued Dictionary)