Comparison of Fingerprint Detection Report by National Institute of Justice

A variety of light sources and reagents are available for the detection and identification of latent fingermarks. The National Institute of Justice released this study recently. The study was undertaken to explore the optimum light and filter combinations of laser and light-emitting diode (LED) light for use with indanedione and two new chemical reagents, genipin and lawsone.The light sources utilized were Coherent® TracER™ lasers operating at 460nm, 532nm and 577nm and the Rofin Polilight Flare Plus LED operating at 505nm.