2D Hands-Free Barcode Scanner is designed to sit on a counter-top and don’t need to be picked-up or held. These scanners are made for hands-free operation and don’t require triggering to read. Likewise, instead of a single aimer like handheld scanners, presentation scanners have wide reading areas to reduce the need for aiming. You’ll find these types of scanners at retail checkouts since it is easy to scan lots of items quickly. Just present the barcode in front of the scanner and it will read it automatically.
Two-dimensional (2D) barcodes. Two-dimensional (2D) barcodes look like squares or rectangles that contain many small, individual dots. A single 2D barcode can hold a significant amount of information and may remain legible even when printed at a small size or etched onto a product.