A barcode reader is an input device that scans and decodes data from barcodes into a computer system.
Barcode Reader: An optical scanner that reads printed barcodes and converts them into digital data.
| Type | Description |
|---|---|
| Handheld | Portable, used manually over barcodes |
| Pen-type | Uses a light source and photodiode |
| Laser Scanner | Uses laser beam for fast and accurate reading |
| CCD Scanner | Uses light sensors, common in POS systems |
| Camera-based (2D) | Reads both 1D and 2D codes like QR codes |
| Mobile Apps | Smartphone camera-based scanning |
Barcode readers enhance speed and accuracy in data entry and inventory management, widely used in retail, logistics, and healthcare sectors.