Forensic identification

Document shredders affectation assertive device-specific characteristics, "fingerprints", like the exact agreement of the blades, the amount and arrangement of their wear. These can be reconstructed from the minute variations of admeasurement of the cardboard strips and the diminutive marks on their edges, and by allegory with the strips produced by accepted shredders, the alone shredder that was acclimated to abort a accustomed certificate may be determined. Jack Brassil, a researcher for Hewlett-Packard, works on a activity for authoritative shredders added calmly traceable.16 (Cf. the argumentative identification of typewriters.)