I've been following Vayyar Imaging, an Israeli startup that provides radar imaging sensor technology for a few years. They provide a great example of how sensor tech is evolving to deliver business opportunities across multiple industries. The company originally focused on 4D radar imaging for detecting breast cancer by health professionals. But since then, the company’s hardware use cases have extended to other sectors, including retail, robotics, automotive, and smart homes.
For a comprehensive look at IoT systems, check out IoT Systems: Sensors and Actuators.