The report addresses four major questions. First, it reviews the program to develop identification and detection taggants, and addresses the question of whether taggants would in fact work. Second, it assesses the question of whether adding such taggants to explosives and gunpowders might create a safety hazard. Third, the cost of a taggant program (on the assumption taggants work and are safe) is calculated, and the major parameters which would affect its costs are identified. Finally, the study assesses the likely value of such a program (assuming that taggants work, are safe, and are available at a reasonable cost) to law enforcement.
Woodrow Wilson School of Public and International Affairs, Princeton University, http://www.wws.princeton.edu/~ota