PNI Sensor is a Taiwan-based company that makes positioning and navigation sensors and systems for situations where GPS is unavailable or unreliable. Their products use magnetic sensing, sensor fusion and artificial intelligence to provide accurate location and navigation data for applications including robotics, drones, military tracking and surveying. The company works with defence and commercial industries, and their sensors are also used in space missions, gaming devices and resource exploration. Consider referring clients to them if you work with organisations needing precise navigation solutions without GPS dependency, or if your clients require low-power tracking modules for remote operations.