barcodescanners

Barcodescanners are input devices that read printed or displayed barcodes and convert them into digital data for computer systems. They are used to speed data entry, reduce errors, and automate tasks in retail, warehousing, manufacturing, healthcare, and logistics.

There are several form factors and reading technologies. Handheld laser scanners emit a laser line and decode the reflected light from one- dimensional barcodes. Linear CCD imagers use a line of sensors to capture the symbol, while two-dimensional imagers use a small camera to capture the barcode image and software to decode it. One-dimensional (1D) scanners read 1D symbols such as UPC/EAN and Code 39; two-dimensional (2D) imagers can read 2D codes such as Data Matrix and QR codes. Pen-type or wand scanners are older, hand-drag devices, while fixed-mount and presentation scanners are designed for hands-free use at checkout or workstations.

Technology and performance considerations include read reliability across different barcode sizes and conditions. Laser scanners are fast for 1D codes and work well at a distance, whereas imagers provide omnidirectional reading, can capture damaged or poorly printed codes, and support 2D symbologies. Many models include illumination options, fast decoding algorithms, memory for offline processing, and programmable interfaces or data formatting to fit business systems.

Interfaces and integration typically include USB, Bluetooth, or Wi-Fi for wireless operation, with additional options such as RS-232 or keyboard wedge for legacy equipment. They are commonly connected to point-of-sale terminals, computers, warehouse management systems, or mobile devices, enabling streamlined data capture across workflows.