TY - JOUR
T1 - Latent Fingermark Aging Patterns (Part III)
T2 - Discontinuity Index as One Indicator of Degradation
AU - De Alcaraz-Fossoul, Josep
AU - Barrot Feixat, Carme
AU - Carreras-Marin, Clara
AU - Tasker, Jack
AU - Zapico, Sara C.
AU - Gené Badia, Manel
N1 - Publisher Copyright:
© 2017 American Academy of Forensic Sciences
PY - 2017/9
Y1 - 2017/9
N2 - This article is the third in a series of reports exploring quantifiable visual parameters of the aging process of latent fingermarks. On this occasion, research is focused on the occurrence of ridge discontinuities (i.e. breakages) as a function of time. Experiment variables included type of secretion (eccrine and sebaceous), substrate (glass and plastic), and exposure to natural light (dark, shade, and direct light) over a 6 months period. Fingermarks were sequentially visualized with titanium dioxide powder, photographed, and the number of naturally occurring ridge discontinuities subsequently evaluated. A semi-quantitative value, named Discontinuity Index, was used to better characterize this aging parameter. Results indicated that ridges of sebaceous depositions on glass were generally less affected by the environmental conditions compared with those on plastic surface. In addition, aging in darkness was not always the best condition for preservation, and the direct exposure to light seemed not to affect the degradation under certain conditions.
AB - This article is the third in a series of reports exploring quantifiable visual parameters of the aging process of latent fingermarks. On this occasion, research is focused on the occurrence of ridge discontinuities (i.e. breakages) as a function of time. Experiment variables included type of secretion (eccrine and sebaceous), substrate (glass and plastic), and exposure to natural light (dark, shade, and direct light) over a 6 months period. Fingermarks were sequentially visualized with titanium dioxide powder, photographed, and the number of naturally occurring ridge discontinuities subsequently evaluated. A semi-quantitative value, named Discontinuity Index, was used to better characterize this aging parameter. Results indicated that ridges of sebaceous depositions on glass were generally less affected by the environmental conditions compared with those on plastic surface. In addition, aging in darkness was not always the best condition for preservation, and the direct exposure to light seemed not to affect the degradation under certain conditions.
KW - aging
KW - dating
KW - discontinuities
KW - forensic science
KW - latent fingerprint
KW - morphometrics
KW - parameters
KW - titanium dioxide
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U2 - 10.1111/1556-4029.13438
DO - 10.1111/1556-4029.13438
M3 - Article
C2 - 28144945
AN - SCOPUS:85011585263
SN - 0022-1198
VL - 62
SP - 1180
EP - 1187
JO - Journal of Forensic Sciences
JF - Journal of Forensic Sciences
IS - 5
ER -