Abstract:
:To understand how time and temperature could affect latent fingerprints, wooden pallets were used to construct five units that each housed ten 60-watt incandescent light bulbs. Fingerprints were deposited on the top, middle, and base of the globes. The bulbs were powered on (except the control bulb in each unit) for 18, 48, 72, 120, 168, 336, 504, and 672 h. Fingerprints recovered from the bulbs by tape lift after black powder processing were given a quality score. A thermal imaging camera determined temperatures on three areas of the bulbs. Fingerprints on the top of the globe (156.3°C) had the lowest quality score, and fingerprints on the middle of the globe (112.6°C) had the highest quality score. The mean quality scores of the three temperature classes were within one standard deviation of one another, meaning there is no way to estimate fingerprint age based on its quality after heat exposure.
journal_name
J Forensic Scijournal_title
Journal of forensic sciencesauthors
Colella O,Miller M,Boone E,Buffington-Lester S,Curran FJ 3rd,Simmons Tdoi
10.1111/1556-4029.14133subject
Has Abstractpub_date
2020-01-01 00:00:00pages
90-96issue
1eissn
0022-1198issn
1556-4029journal_volume
65pub_type
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