De Alcaraz-Fossoul Josep, Barrot-Feixat Carme, Zapico Sara C, Mancenido Michelle, Broatch Jennifer, Roberts Katherine A, Carreras-Marin Clara, Tasker Jack
School of Mathematical and Natural Sciences, New College of Interdisciplinary Arts and Sciences, Arizona State University, Glendale, AZ, 85306.
Faculty of Medicine - Legal Medicine Unit, Universitat de Barcelona, Barcelona, Catalonia, Spain.
J Forensic Sci. 2018 Jul;63(4):1085-1091. doi: 10.1111/1556-4029.13656. Epub 2017 Oct 3.
A methodology to estimate the time of latent fingerprint deposition would be of great value to law enforcement and courts. It has been observed that ridge topography changes as latent prints age, including the widths of ridges that could be measured as a function of time. Crime suspects are commonly identified using fingerprint databases that contain reference inked tenprints (flat and rolled impressions). These can be of interest in aging studies as they provide baseline information relating to the original (nonaged) ridges' widths. In practice, the age of latent fingerprints could be estimated following a comparison process between the evidentiary aged print and the corresponding reference inked print. The present article explores possible correlations between inked and fresh latent fingerprints deposited on different substrates and visualized with TiO . The results indicate that the ridge width of flat inked prints is most similar to fresh latent fingerprints and these should be used as the comparison standard for future aging studies.
一种估算潜在指纹沉积时间的方法对执法部门和法庭具有重要价值。据观察，随着潜在指纹老化，嵴纹形态会发生变化，包括嵴纹宽度，而嵴纹宽度可作为时间的函数进行测量。犯罪嫌疑人通常通过指纹数据库进行识别，该数据库包含参考捺印十指指纹（平面和滚动捺印）。这些在老化研究中很有意义，因为它们提供了与原始（未老化）嵴纹宽度相关的基线信息。在实践中，通过将作为证据的老化指纹与相应的参考捺印指纹进行比较过程，可估算潜在指纹的年龄。本文探讨了在不同基质上沉积并用二氧化钛显现的捺印指纹和新鲜潜在指纹之间可能存在的相关性。结果表明，平面捺印指纹的嵴纹宽度与新鲜潜在指纹最为相似，这些应作为未来老化研究的比较标准。
