Barcode Scanners & Readers for Retail, Logistic and Industry
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ensure the correct barcode reading and data transmission. Based on reading method the readers you can distinguish between reading pens, linear imagers, 2D imagers or laser scanners. The scanners can be supplied with or without barcode decoder. The products with barcode decoder are equipped either with serial interface RS232 or with keyboard emulator. The decoder is added between the keyboard and PC and thus the scanner behaves as the scanned data would be entered from the keyboard. The advantage of this solution is that no software changes are needed. Barcode scanners without decoder are mainly used in connection with data terminals
equipped with integrated decoder and appropriate data input.
Before choosing any barcode scanners, it is recommended to define for what applications, what types of barcodes, in what environment and at what daily working load the scanners will be used. For some applications may not be suitable using of barcodes (hard conditions, frequent washing, high temperature, very little reading area, etc.) and will be more appropriate to use RFID technology
Differences Between Particular Type of Barcode Readers
1D barcode readers
are designed for reading all standard linear codes (EAN, Code 128, Code 39, 2 of 5, UPC etc.). Some models can also be used for reading PDF-417 and MicroPDF codes. Readers are available in versions with linear imager or laser beam. Performance models of laser scanners can read barcodes on distance of several meters.
– These types of scanners are capable to read 2D barcode (PDF-417, Micro PDF, Datamatrix, QR code, Aztec Code, MaxiCode etc.). The 2D / QR codes allow to save more information in to a smaller area than in case of linear barcodes.