A scanner is a device that captures images from photographic prints, posters, magazine pages, and similar sources for computer editing and display. Scanners come in hand-held, feed-in, and flatbed types and for scanning black-and-white only, or color. What can a scanner be used for? A scanner can be used for a variety of tasks, including scanning documents, photos, and other images into a computer, and scanning barcodes into a database. What is scanner class in java? A scanner class is a class in java that is used to scan for input from a user. This can be used to take input from a keyboard, mouse, or other input device. Is scanner a output or input? A scanner is an input device that converts physical objects or images into digital form. How do I scan with my phone camera? To scan with your phone camera, you'll need to download a scanning app. Once you have the app installed, open it and point your camera at the object you'd like to scan. The app will automatically capture and save the image. Where is the scanner on my iPhone? The scanner on the iPhone is located on the top of the device, next to the camera.