A comparison of six fingerprint enhancement techniques for the recovery of latent fingerprints from unfired cartridge cases

Ainsley J. Dominick, Kenny Laing, Scottish Police Services Authority Forensic Services, Mark Enhancement Laboratory, Glasgow, UK

Research output: Contribution to journalArticle

16 Citations (Scopus)
885 Downloads (Pure)

Abstract

This work compared the effectiveness of six different enhancement methods on six different sizes of brass cartridges. One sebaceous fingerprint was deposited onto twenty-five of each size of cartridge to enable a statistical evaluation of the enhancement methods for each cartridge size to be undertaken. The enhancement methods compared were superglue followed by BY40, superglue followed by gun blue followed by BY40, gun blue only, superglue followed by palladium deposition, palladium deposition only, and powder suspension. The six different cartridges used in this study were .22s, .32s, 9mm, .38s, ribbed shotgun, and smooth shotgun. The study found that more potentially identifiable fingerprints were enhanced on the larger cartridge cases. This was due to the surface area on the smaller cartridges, and in particular the .22s provided little ridge detail. Two techniques provided the best results - superglue followed by gun blue followed by BY40, and superglue followed by palladium deposition. This showed that the combination of the cyanoacrylate fuming and the metal oxidation reactions is increasing the yield of potentially identifiable fingerprints compared with the use of the techniques separately. Both techniques were also found to give reproducible results. These two enhancement techniques were also compared statistically and no statistical difference in their effectiveness was found suggesting both techniques are equally as effective at enhancing fingerprints on brass cartridge cases.
Original languageEnglish
Pages (from-to)155-165
Number of pages11
JournalJournal of Forensic Identification
Volume61
Issue number2
Publication statusPublished - 2011

Fingerprint

Firearms
Dermatoglyphics
Palladium
Cyanoacrylates
Powders
Suspensions
Metals
brass

Keywords

  • forensic science
  • fingerprints
  • forensic identification

Cite this

Dominick, A. J., Laing, K., & Scottish Police Services Authority Forensic Services, Mark Enhancement Laboratory, Glasgow, UK (2011). A comparison of six fingerprint enhancement techniques for the recovery of latent fingerprints from unfired cartridge cases. Journal of Forensic Identification, 61(2), 155-165.
Dominick, Ainsley J. ; Laing, Kenny ; Scottish Police Services Authority Forensic Services, Mark Enhancement Laboratory, Glasgow, UK. / A comparison of six fingerprint enhancement techniques for the recovery of latent fingerprints from unfired cartridge cases. In: Journal of Forensic Identification. 2011 ; Vol. 61, No. 2. pp. 155-165.
@article{1e5c39e28b1c49fd9eef983a126bee16,
title = "A comparison of six fingerprint enhancement techniques for the recovery of latent fingerprints from unfired cartridge cases",
abstract = "This work compared the effectiveness of six different enhancement methods on six different sizes of brass cartridges. One sebaceous fingerprint was deposited onto twenty-five of each size of cartridge to enable a statistical evaluation of the enhancement methods for each cartridge size to be undertaken. The enhancement methods compared were superglue followed by BY40, superglue followed by gun blue followed by BY40, gun blue only, superglue followed by palladium deposition, palladium deposition only, and powder suspension. The six different cartridges used in this study were .22s, .32s, 9mm, .38s, ribbed shotgun, and smooth shotgun. The study found that more potentially identifiable fingerprints were enhanced on the larger cartridge cases. This was due to the surface area on the smaller cartridges, and in particular the .22s provided little ridge detail. Two techniques provided the best results - superglue followed by gun blue followed by BY40, and superglue followed by palladium deposition. This showed that the combination of the cyanoacrylate fuming and the metal oxidation reactions is increasing the yield of potentially identifiable fingerprints compared with the use of the techniques separately. Both techniques were also found to give reproducible results. These two enhancement techniques were also compared statistically and no statistical difference in their effectiveness was found suggesting both techniques are equally as effective at enhancing fingerprints on brass cartridge cases.",
keywords = "forensic science, fingerprints, forensic identification",
author = "Dominick, {Ainsley J.} and Kenny Laing and {Scottish Police Services Authority Forensic Services, Mark Enhancement Laboratory, Glasgow, UK}",
year = "2011",
language = "English",
volume = "61",
pages = "155--165",
journal = "Journal of Forensic Identification",
issn = "0895-173X",
publisher = "International Association for Identification",
number = "2",

}

Dominick, AJ, Laing, K & Scottish Police Services Authority Forensic Services, Mark Enhancement Laboratory, Glasgow, UK 2011, 'A comparison of six fingerprint enhancement techniques for the recovery of latent fingerprints from unfired cartridge cases', Journal of Forensic Identification, vol. 61, no. 2, pp. 155-165.

A comparison of six fingerprint enhancement techniques for the recovery of latent fingerprints from unfired cartridge cases. / Dominick, Ainsley J.; Laing, Kenny; Scottish Police Services Authority Forensic Services, Mark Enhancement Laboratory, Glasgow, UK.

In: Journal of Forensic Identification, Vol. 61, No. 2, 2011, p. 155-165.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A comparison of six fingerprint enhancement techniques for the recovery of latent fingerprints from unfired cartridge cases

AU - Dominick, Ainsley J.

AU - Laing, Kenny

AU - Scottish Police Services Authority Forensic Services, Mark Enhancement Laboratory, Glasgow, UK

PY - 2011

Y1 - 2011

N2 - This work compared the effectiveness of six different enhancement methods on six different sizes of brass cartridges. One sebaceous fingerprint was deposited onto twenty-five of each size of cartridge to enable a statistical evaluation of the enhancement methods for each cartridge size to be undertaken. The enhancement methods compared were superglue followed by BY40, superglue followed by gun blue followed by BY40, gun blue only, superglue followed by palladium deposition, palladium deposition only, and powder suspension. The six different cartridges used in this study were .22s, .32s, 9mm, .38s, ribbed shotgun, and smooth shotgun. The study found that more potentially identifiable fingerprints were enhanced on the larger cartridge cases. This was due to the surface area on the smaller cartridges, and in particular the .22s provided little ridge detail. Two techniques provided the best results - superglue followed by gun blue followed by BY40, and superglue followed by palladium deposition. This showed that the combination of the cyanoacrylate fuming and the metal oxidation reactions is increasing the yield of potentially identifiable fingerprints compared with the use of the techniques separately. Both techniques were also found to give reproducible results. These two enhancement techniques were also compared statistically and no statistical difference in their effectiveness was found suggesting both techniques are equally as effective at enhancing fingerprints on brass cartridge cases.

AB - This work compared the effectiveness of six different enhancement methods on six different sizes of brass cartridges. One sebaceous fingerprint was deposited onto twenty-five of each size of cartridge to enable a statistical evaluation of the enhancement methods for each cartridge size to be undertaken. The enhancement methods compared were superglue followed by BY40, superglue followed by gun blue followed by BY40, gun blue only, superglue followed by palladium deposition, palladium deposition only, and powder suspension. The six different cartridges used in this study were .22s, .32s, 9mm, .38s, ribbed shotgun, and smooth shotgun. The study found that more potentially identifiable fingerprints were enhanced on the larger cartridge cases. This was due to the surface area on the smaller cartridges, and in particular the .22s provided little ridge detail. Two techniques provided the best results - superglue followed by gun blue followed by BY40, and superglue followed by palladium deposition. This showed that the combination of the cyanoacrylate fuming and the metal oxidation reactions is increasing the yield of potentially identifiable fingerprints compared with the use of the techniques separately. Both techniques were also found to give reproducible results. These two enhancement techniques were also compared statistically and no statistical difference in their effectiveness was found suggesting both techniques are equally as effective at enhancing fingerprints on brass cartridge cases.

KW - forensic science

KW - fingerprints

KW - forensic identification

UR - http://www.theiai.org

M3 - Article

VL - 61

SP - 155

EP - 165

JO - Journal of Forensic Identification

JF - Journal of Forensic Identification

SN - 0895-173X

IS - 2

ER -

Dominick AJ, Laing K, Scottish Police Services Authority Forensic Services, Mark Enhancement Laboratory, Glasgow, UK. A comparison of six fingerprint enhancement techniques for the recovery of latent fingerprints from unfired cartridge cases. Journal of Forensic Identification. 2011;61(2):155-165.