“…The book Emerging Technologies for the Analysis of Forensic Traces published in 2019 devotes a chapter [ 4 ] to recent advances in the field of GSR, covering IGSR but also OGSR in a detailed and very complete manner, as well as the estimation of time since discharge. The interest and originality of this book also lies in the fact that for each piece of evidence treated, and therefore also for GSR, a commentary by an end-user is proposed, which makes it possible to anchor these scientific and technical advances to routine and field practice [ 5 ].…”