Smart farming, also known as precision farming, allows farmers to maximize yields using the least amount of resources, such as water, fertilizer, and seeds. By deploying sensors and mapping fields, farmers can begin to understand their crops at a microscopic level, saving resources and reducing their environmental impact. The history of smart farming dates back to the 1980s, when the capabilities of the Global Positioning System (GPS) became available. Once farmers can accurately map their tillage, they can monitor and fertilize and weed only where needed.​​