CP-SIIG’s service providers commence document investigations with optical examinations, followed by one or a combination of the development processes followed again by optical examinations.
Image capture and enhancement occurs at each stage where a fingerprint is revealed.
Development processes include:
1,2-Indanedione Zinc – A chemical reagent that is used to develop latent fingerprints on porous surfaces (paper and cardboard).
Cyanoacrylate fuming – Often referred to as “superglue fuming”, cyanoacrylate can be used to develop latent fingerprints on objects that are non porous or semi porous (aluminium cans, CD covers, plastic bottles, etc).
Powdering – Standard black and/or magnetic powders can be used to physically develop fingerprints on non porous surfaces such as window panes, car doors, plastics, door handles etc.