There are 3 popular types of barcode scanners: Laser Barcode Scanner, CCD barcode scanners, and 2D CMOS Barcode Scanners. We have outlined the advantages and disadvantages of all 3 types and what will help you to understand and choose the suitable one for you.
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1. Laser Barcode Scanners
The laser barcode scanner is the most common and the most popular. The laser scanner operates by emitting a red diode laser that reflects back the barcode for processing. Bluetooth laser barcode scanners are small and easy to use. Due to their portability, they are the perfect solution for inventory, attendance, or retail arbitrage.
Advantages:
♦ Fast: Laser scanners can decode extremely fast. For example, the syble laser barcode scsnner Scanner can decode 150 scans per second.
♦ Accurate: Laser scanners scan most 1D barcodes with ease. Just point and scan for quick results.
♦ Powerful: Unlike a CCD scanner, laser scanners can read large barcodes and from longer distances. Some laser scanners can read barcodes from over 50 feet away.
Disadvantages:
♦ Ambient Light: Because a laser scanner functions by reflecting light back, high ambient light (such as direct sunlight) may cause difficulties when trying to scan.
♦ Laser Limitations: Most laser barcode scanners cannot read barcodes from a computer or mobile device display. Furthermore, if the barcode is damaged, faded or too small in scale, the laser barcode scanner may not be able to capture the scan.
2. CCD Barcode Scanners (Linear Imagers)
CCD (Charged Coupling Device) barcode scanners use an imaging engine to take a picture of the barcode and then decode the characters. CCD barcode scanners are "linear imagers" meaning that you will still see a red focus line when triggering the scan.
Advantages:
♦ Durable: CCD scanners have no internal moving parts so they are typically a bit more durable than a laser scanner.
♦ More economical: CCD scanners, on average, are usually less costly than other barcode scanners.
♦ Scan In Direct Sunlight & On Device Screens: Essentially, a CCD scanner is "taking a picture" of the barcode. Due to this scanning process, CCD scanners are able to operate in bright sunlight. Most CCD scanners are also able to read scans off a computer or other devices screens.
Disadvantages:
♦ Barcode Size Limitations: CCD scanners are unable to read barcodes that are wider than the imager line.
♦ Scan Distance Limitations: Most CCD scanners are only able to read barcodes from a few inches away.
There are two types of barcodes used now: 1D and 2D. A linear or 1D barcode uses a group of parallel lines and spaces to encode data – this is what most people think of when they hear "barcode". 2D barcode like Data Matrix, QR codes, or PDF417, uses patterns of squares, hexagons, dots, and other shapes to encode data.
The data encoded in 1D and 2D barcodes are also different. A 2D barcode can contain images, website addresses, voice, and other binary data. Meanwhile, a 1D barcode encodes alphanumeric information, such as product number, production date, etc.
It is important to check which type of barcode you have because there are still rugged PDA and tablet PC barcode scanners that scan only 1D or 2D barcodes.
Although, rugged barcode scanners seem to have a relatively high price tag when compared to regular scanners. But there is a tradeoff in durability, and the cost of often replacement balances out the initial additional cost.
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If you are not likely to use the scanner frequently, then you can buy any cheap scanner. However, if you are likely to use it regularly, then you might consider a rugged scanner.
The work environment must also be taken into account. Most scanners are designed for use in an office or in-store environment. But if you're using your scanners in a warehouse or outdoor setting, a rugged unit is recommended. The rugged units are completely sealed against dust and moisture, can withstand repeated drops of 1.5 or 2 meters onto concrete, and severe abuse.
Although, rugged barcode scanners seem to have a relatively high price tag when compared to regular scanners. But there is a tradeoff in durability, and the cost of often replacement balances out the initial additional cost.
A barcode reader has to communicate with a computer to transmit the barcode information into the software it is using. Wired readers are the most common type that connects directly to the PC via a USB connection. This type is easy to set up and the least expensive option.
Wireless readers also have become more common these days as their costs have become much more affordable. Most cordless scanners use BT or radio to communicate, which gives you the further distance from the PC, provides greater mobility and freedom from cable clutter in any application.
There are four types of barcode scanners' form factors available in the market today: handheld, presentation, mounted scanners, and mobile devices. Handheld barcode scanners are the simplest to operate, but users need to press the trigger. Presentation scanners are usually mounted on a counter and can scan wider areas. Meanwhile, the mounted scanners are either embedded into a counter-top as you would see in a retail store or mounted on a kiosk or conveyor belt.
A mobile computer scanner is a scanner and PC integrated into one mobile device, providing complete mobility. Instead of connecting the scanner with a cable like other scanners, the mobile computer scanners can use broad connectivity capabilities such as Wi-Fi to relay scanned information or check the data directly on the screen. It is the ideal choice for quick and efficient inventory handling.
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