This work shows that small electric currents can be measured at characteristic points on the skin in a replicable manner with a non-invasive probe. In order to achieve a correct and meaningful evaluation of the magnitude of these currents, a probe and a software tool have been developed. The complete system (probe and tool) is versatile from the point of view of the hardware and software designs. The tool can be used to perform accurate and reliable analysis of the emitted currents and to easily go on to further applications and research in order to understand the correlation between any measureable point and the activity of the body organs. The tool provides different graphic representations of the results and a series of measurements have been presented and evaluated comparing the currents emitted by different characteristic points on the hands of a number of subjects.