Barcode readers come in handy, stationary, and built-in device types, and are used to manage and organize goods and materials in offices, logistics, warehouses, etc. Reading and communication methods vary depending on the product, such as those that can read barcodes without contact, those that can communicate wirelessly, those that can replace the USB port of a PC with a power supply, etc., and there are some products that enable rapid image processing using unique decoding technologies of manufacturers.