Inertial Sensor

A sensor device that measures acceleration, rotation, and orientation using accelerometers and gyroscopes, often combined with magnetometers. In assistive technology, inertial sensors are used to track the direction a user is facing and the movements of their head or body, providing essential orientation data for navigation systems for blind and visually impaired users. When combined with cameras and environmental models, inertial sensors enable assistive systems to maintain awareness of the user's viewing direction and detect changes in heading. Modern smartphones contain built-in inertial sensors, making this technology increasingly accessible for mobile navigation applications for people with visual impairments.