https://www.sciencedaily.com/releases/2022/03/220331101518.htm

The South Australian forensic science researchers are building a suite of new insights into crime scene investigation -- including the difference between high, intermediate and low skin 'shedders' that will help understanding of trace or 'touch DNA'.

The latest research, 'DNA deposited in whole thumbprints' (just published in Forensic Science International: Genetics), further studies inter-variation of DNA shedding obtained from experiments on samples gathered from 10 different people and 30 of their thumbprints.