Researchers have designed a human-machine interface system that allows to track eye gesture movement by using TMR-based sensors. Three TMR-sensors are integrated on an eyeglass frame to detect the relative motion between them and tiny magnets embedded in a contact lens being worn by the participant. The design, which was recently published in IEEE Transactions on Biomedical Circuits and Systems, was successfully tested on participants playing a simplified Tetris game using only their eye movements. This type of wearable technology can indeed be valuable for people with motor impairments.
Original article: A. Tanwear et al., “Spintronic Sensors Based on Magnetic Tunnel Junctions for Wireless Eye Movement Gesture Control,” in IEEE Transactions on Biomedical Circuits and Systems, vol. 14, no. 6, pp. 1299-1310, Dec. 2020, doi: 10.1109/TBCAS.2020.3027242