Résumé
The powder method is a quick and easy approach to developing latent fingerprints on porous and non-porous surfaces. Some alternative materials could be used to produce the revealing dust. The present work used waste from the steel industry for producing fingerprint powder. The addition of carbon black intensified the color of the material, and the addition of shellac increased the adhesion of the powder to the print residue. The obtained powder had its efficiency compared with the international reference material (Sirchie Hi-Fi Volcano) for different types of surfaces, and its efficiency was comparable. Besides, the material was donated and used by several scientific police in Brazil. The material here produced was as efficient as the commercial one, with the advantage of being produced from industrial waste, what makes the method affordable and environmentally sustainable.