This work proposes a novel approach for recognizing gestures by detecting the flexion and extension of tendons in the human hand. A proof of concept is being developed to support the idea. It involves the design and fabrication of a microstrip antenna and the use of a rotating belt to emulate the gliding of tendons in the wrist. Doppler Radar principles are used to detect the direction of movement of the belt. The current focus is toward developing a framework for direction detection using the model. Future work includes developing a working system at the target frequency of 60 GHz.