This paper presents the experimental validation and comparison of data from a portable system that focuses on acquiring, processing, and transmitting the vertical component of ground reaction forces. The data is stored and compared with force plates manufactured by Biometrics LTD. Ten individuals performed a walking test for this experiment using the portable system placed on the right foot while moving on the force plates. After this test, with the data obtained from both systems, a statistical analysis was performed and the intraclass correlation coefficient was calculated, to find characteristics of the signals that prove that the portable system works according to the theory and presents a correlation with the commercial system. The results of this validation show that the developed portable system has over 90% reliability compared to the commercial system, considering the parameters obtained from the statistical analysis. In conclusion, this device results in an alternative for a preliminary study of the gait cycle that allows the specialist to provide early care to users for the diagnosis of pathologies or during rehabilitation processes.