What if We Could Trick Meta Quest 3 Hand Tracking System to Enable Low Limb Tracking with No Additional Sensors?
摘要
Virtual reality (VR) has become an influential tool in physical rehabilitation, providing immersive environments that enhance patient engagement, particularly in leg exercises. However, the Meta Quest 3 headset poses a limitation: it restricts access to video feed data due to privacy concerns, hindering real-time lower limb tracking essential for effective rehabilitation applications. This paper presents an innovative solution that circumvents this limitation by leveraging the headset’s existing hand-tracking algorithm. We propose the use of fabricated “fake hands” crafted from common household items, which are placed over the user’s feet. This setup tricks the Meta Quest 3 into interpreting foot movements as hand movements, thereby enabling lower limb tracking without the need for additional sensors like accelerometers or gyroscopes. We detail the design process of these fake hands and validate the concept through captured screenshots demonstrating successful tracking of leg movements within the VR environment. The proposed solution offers significant advantages in terms of accessibility, cost-effectiveness, and convenience, eliminating the need for external hardware.