This chapter introduces a novel three-dimensional quasi-zero stiffness (3DQZS) system for the development of a 3D sensor capable of measuring absolute motion in vibratory environments. The 3DQZS mechanism is realized through a pre-deformed, scissor-like structural configuration, enabling multi-directional compliance and stability. Nonlinear dynamic behavior of the sensor system is rigorously analyzed using mathematical modeling and the harmonic balance method, revealing high accuracy and reliability in 3D motion measurement. A case study in active vibration control demonstrates that the integration of the 3DQZS-based sensor significantly enhances control performance compared to conventional systems employing linear feedback controllers. These findings underscore the potential of the proposed sensor system to serve as a superior alternative for addressing complex vibration control challenges across a wide range of engineering applications.