Interactive systems engineering is when people create machines and technology that can interact with people. This could mean giving people a way to do things like control a robot, type on a computer, or even fly a plane. People use special tools and equipment to design these systems to make sure they work correctly and safely. To make a system interactive, engineers have to think about how to make it easy to use and understand. Different techniques are used to give people a way to interact with a system. This could mean adding buttons, touchscreens, or voice controls.