Filed under: Misc. GadgetsMacGyver and Maxwell Smart had a plethora of tricks up their sleeves (or shoes, as it were), but they never had this. One Paul Kelly and colleagues at Loughborough University have discovered that a disulfur dinitride polymer can not only turn exposed fingerprints brown as it creates a reaction with the nearly undetectable residues, but it can also lift text from departed letters. In an odd twist of fate, it was found that traces of inkjet printer ink can actually initiate the polymer just like print residue can, and the detection limit is so
