The contribution presents the visualization of latent fingerprints on metal surfaces by the method of electrochemical deposition of a selected polymer film based on phenazine dyes, ethylenedioxythiophene and aniline. Electrochemical methods allow electron transfer, which leads to electrochemical oxidation or reduction of the monomer and the formation of a polymer layer on a metal substrate. This process can be carried out by various methods such as applying a constant current (galvanostatically), a constant potential (potentiostatically - chronoamperometry) or by cycling potentials (cyclic voltammetry).