Handheld 2D Barcode Scanner - Advantages and Disadvantages
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Handheld barcode scanners are in two categories. 2D and 1D. 2D bar code scanner sales are growing at impressive speed. 1D scanner sales are relatively flat compared to last year. The question that many ask potential buyers of 2D bar code scanner, "what are the main advantages of using a 2D bar code scanner on a 1D bar code scanner?" This article describes some of the many advantages. There are some disadvantages that must be taken into account when somake a decision.
Benefits
The main advantage of using a 2D barcode scanner is the ability to read and decode 2D barcodes. Data Matrix, Aztec, QR Code and Han Xin are examples of 2D bar codes used today. 2D barcodes are capable of holding much more data than 1D bar codes in the same or less physical space. Product manufacturers can put hundreds or even thousands of characters in a single 2D barcode.
Having the ability to readBarcodes omni-directional another big advantage of using a 2D bar code scanner. All handheld 2D bar code scanners use an image sensor to capture an image of the barcode. The image is then run through a software decoder program that is in the scanner's firmware. The software decoder program has the ability to barcode on any barcode unique features, no matter what the orientation of the bar code to search. This system allows the user to keepthe scanner in the same position for each bar code read, no matter the position of the barcode. The scanner will not be aligned to form a line to be read with the barcode. User fatigue and general read times are significantly reduced.
The image sensor uses the same technology as today's digital cameras. The only major difference is that 2D barcode scanner is a grayscale imager to use a contrast color imager. Because it is an imager, many scanners have the capability of theTaking a picture and sending this image on your computer that is connected. Photograph of signatures for proof of delivery, damaged packages, forms and recognition of the scanner image processing are just some of the applications used with the images of 2D bar code scanner.
Reliability is another major advantage of the 2D bar code scanner. There is only one moving part in a 2D bar code scanner. The trigger switch. All scanners use triggerswitches rated for millions of activations. Rarely is a failure to be on the field. No failure means no downtime for the customer, resulting in higher efficiency, less frustration, and lower total cost of ownership.
These are just some of the advantages of using a 2D bar code scanner instead of a 1D bar code scanner. There are more benefits not listed here. There are also some disadvantages. Typically, the advantages outweigh the disadvantages,but the disadvantages have to do to be considered when making a decision.
Disadvantages
Price. 2D bar code scanners are a relatively new technology and continually evolving. Image sensors with more pixels, fast decoding algorithms, improved lighting and the target pattern are all being tweaked and improved. Because of all these investments in the technology that is the price of 2D bar code scanner is higher than 1D bar code scanner. But thePrice difference is decreasing rapidly. All scanners are approaching the price point where they are considered a commodity.
Workspace of 2D barcode scanner is a second disadvantage workspace is defined as the furthest point from a barcode scanner minus the narrowest point of a barcode can be read can be read, for example .. A UPC-A bar code can be read distance of 10 centimeters away from the scanner. In the same barcode can be read at a close distancedistance of 2 cm from the scanner. 10 "minus 2 inches is 8 inches working area. 1D bar code scanner could have the same barcode to a distance of 18 inches and a reading near distance of 1 cm. The smaller work area can be a problem in some applications.
