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What is a barcode reader?
A barcode reader scans and processes barcode data. Types include:
- Pen Reader: Uses LED (red or infrared) to illuminate the barcode; the reflected light is interpreted via a phototransistor.
- Laser Scanner: A laser beam is swept across the barcode, and the reflection is interpreted via mirrors and lenses.
Handheld scanners are the most common form, used in warehouses and retail.
Further explanations of terms.