One of the prominent electronic apparatuses are the Barcode scanners that discover full application, for example, conveying to the PC plenty of printed barcodes. The standardized identification checking framework incorporates focal points, focal point sensors, and the light source that is fundamental for changing over the optical to electrical motivations. The scanner tag peruser comprises of a 'decoder hardware' that evaluates picture information of standardized identification.

Grouping of the Barcode Readers

There is a large group of barcode scanners, for example, the single line just as two-dimensional scanners. It is conceivable to characterize these scanners dependent on their lodging plan and the innovation they use.

Grouping by Technology

Omnidirectional: The omnidirectional barcode scanners make use of many curved or straight scanning lines in different ‘stardust form.’ The scanners produce various kinds of beam patterns in the different orientations which permit barcode reading on multiple angles to the readers. Many readers use single rotating polygonal mirrors and different fixed mirrors to generate complicated scan patterns.

Camera-Based Readers: Camera-based scanners are also known as 2D barcode scanners. These readers use the procedures of image processing as well as a camera for barcode recoding. This category includes the readers of the video cameras as well as the vast ‘field-of-view.’

Characterization By the Housing Design

• Handheld Reader: The handheld barcode readers have handle along with trigger button enabling the turning on of light source.
• Stationary Reader: The stationery barcode scanners are either table-mounted or wall-mounted and find the full application at the check-out posts at retail shops and supermarkets.
• PDA Reader: The PDA readers are in-built barcode readers or attached barcode scanners.
• Automatic Reader: Automatic barcode scanners are back-office tools that find full application as a barcode document reader. These tools read the documents @ 50,000/hour.
• Wireless Reader: The cordless barcode readers use batteries for operation. They serve the purpose of data transfer to the other connected devices such as a personal computer.