In the American state of Idaho, a robot moves between lines of fruit trees and grapevines. It is doing farm work. Called “IdaBot,” this robot is a prototype, or model. An engineering team at Northwest Nazarene University in Nampa, Idaho, developed IdaBot. It looks like a small military tank. But, it is armed with cameras and radio frequency sensors instead of guns. It moves slowly through an orchard, spraying chemicals on each plant that needs treatment. It can do other jobs too, including watching over crops and harvesting them. The robot uses radio frequency identification in its work. This process uses electronic devices on the trees or grapevines to identify them. As the IdaBot moves through the orchards, it “reads” the devices on the plants to learn what it needs.