RÉSUMÉ
@#Introduction: The most common method to emerge latent fingermarks on non-porous surfaces is powdering by applying commercial fingerprint powders. However, the chemical composition of the powder is often toxic and poses health hazards to humans. This study was endeavoured to explore the effectiveness and potential use of natural resources for the enhancement of latent fingermarks. Methods: Eggshells and clamshells were prepared in fine powder form, and latent fingermarks were developed using each powder. Five non-porous substrates were selected for fingermarks deposition; glass, aluminium can, plastic book cover, painted wood, and compact disc. Results: Both natural powders have successfully developed high-quality finger marks with high clarity of ridge characteristics in comparison to commercial fingerprint powder (positive control) and untreated fingermark (negative control) on most of the tested surfaces tested. The sebaceous fingermarks have shown the best quality fingermarks when developed with both powders. In the ageing study, it was found that most non-porous substrates bearing latent fingermarks exposed to the destructive conditions can be successfully visualised in the early period of exposure. Conclusion: Eggshell and clamshell powders are as effective as commercial white powder but preferrable to be applied because of the low cost, abundant and non-hazardous.