This paper presents a comprehensive study on the accuracy and repeatability of the Leap Motion Controller, a device designed for hand gesture and finger position detection with sub-millimeter accuracy. The study aims to evaluate the controller's performance in realistic environments, which has not been previously analyzed. A novel experimental setup involving an industrial robot and a reference pen with a position accuracy of 0.2 mm was developed to assess the controller's capabilities. The results show that the deviation between the desired 3D position and the measured positions is below 0.2 mm for static setups and 1.2 mm for dynamic setups. The analysis also found no significant influence of the reference pen's diameter on the accuracy, and the repeatability values were below 0.17 mm. The study concludes that while the theoretical accuracy of 0.01 mm could not be achieved under real conditions, the Leap Motion Controller still offers high precision suitable for gesture-based user interfaces. Future work will focus on integrating the controller into various applications and further improving its performance.This paper presents a comprehensive study on the accuracy and repeatability of the Leap Motion Controller, a device designed for hand gesture and finger position detection with sub-millimeter accuracy. The study aims to evaluate the controller's performance in realistic environments, which has not been previously analyzed. A novel experimental setup involving an industrial robot and a reference pen with a position accuracy of 0.2 mm was developed to assess the controller's capabilities. The results show that the deviation between the desired 3D position and the measured positions is below 0.2 mm for static setups and 1.2 mm for dynamic setups. The analysis also found no significant influence of the reference pen's diameter on the accuracy, and the repeatability values were below 0.17 mm. The study concludes that while the theoretical accuracy of 0.01 mm could not be achieved under real conditions, the Leap Motion Controller still offers high precision suitable for gesture-based user interfaces. Future work will focus on integrating the controller into various applications and further improving its performance.