A foot scanner is a device designed to capture detailed measurements and 3D models of the foot, leveraging various technologies to map the contours, dimensions, and sometimes pressure points of the foot’s surface. This tool has become indispensable across industries such as healthcare, footwear, and sports, offering a non-invasive, efficient alternative to traditional manual measurements. The core technologies used in foot scanners include structured light (projecting patterns onto the foot and using cameras to calculate depth), laser triangulation (emitting laser lines and measuring their distortion), photogrammetry (combining multiple 2D images to create 3D models), and pressure sensors (recording force distribution during weight-bearing). Each technology offers unique benefits: structured light provides high resolution for detailed anatomy, lasers excel in speed, photogrammetry works well for full-body integration, and pressure sensors capture dynamic data during movement. In healthcare, foot scanners assist podiatrists and orthotists in diagnosing conditions like flat feet, bunions, or diabetic foot issues by providing objective measurements for custom orthotics or treatment plans. In the footwear industry, they enable the production of custom-fitted shoes, reducing returns and improving comfort by aligning products with individual foot shapes. For athletes, foot scanners help design performance footwear that optimizes support and reduces injury risk. The scanning process is typically quick (10–60 seconds), user-friendly, and suitable for all ages, from children to the elderly. Data from foot scanners can be exported in various formats (STL, CSV, etc.) for use in CAD software, electronic health records, or manufacturing systems, ensuring seamless integration with existing workflows. As technology advances, modern foot scanners increasingly incorporate AI for automated analysis, enhancing their utility in both professional and consumer settings. By providing accurate, accessible foot data, foot scanners are driving innovation in personalized care, product design, and overall foot health management.