1D Hands-Free Barcode Scanner are 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.
A barcode is an optical, machine-readable, representation of data; the data usually describes something about the object that carries the barcode. Originally barcodes systematically represented data by varying the widths and spacing of parallel lines, and may be referred to as linear or one-dimensional (1D).