Wasp Barcode Technologies: The Barcode Solution People

Barcode Scan Engines

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There are three primary barcode scan engines:

Laser

A laser scan engine shoots a laser beam toward a mirror. The mirror moves, which causes the laser to sweep across the barcode in a straight line. A diode measures the level of reflection and translates it into a digital signal. Laser scan engines only read one-dimensional (1D) barcodes.

Linear Imager

A linear imager scan engine, also known as a charged coupled device (CCD) or an LED scanner, takes a picture of a barcode by aligning hundreds of tiny LED lights in a row and shooting light directly onto the barcode. A sensor measures the voltage of the light directly in front of each lightbulb. Like laser scan engines, linear imagers only read 1D barcodes. However because they take a digital image of the barcode, they can read poorly printed and damaged barcodes better than lasers.

2D Area Imager

A 2D area imager scan engine also captures digital images. But unlike a linear imager, a 2D scan engine reads both 1D and 2D barcodes by flashing light onto multiple rows of tiny lightbulbs. Another advantage of 2D scan engines is that they are omnidirectional, meaning they can read barcodes from any angle. This makes them faster and more accurate than laser and linear imagers.

Compare scan engines

The following table provides a quick overview of each barcode scan engine.

barcode scan engines

Scan Engine

Description

Use

Ideal for

Laser

• The most popular type of barcode scanner

• Uses a laser beam to read the difference in the spaces between a barcode’s vertical

  lines

• Rapidly toggles

  mirrors

  back and forth to produce the thin red laser line

• Only reads linear (1D or one-dimensional)

  barcodes

• Works best when precise scanning is necessary

• Easily targets a laser line

• Comes in three basic configurations: moving beam (single line),

  rastering

   (lines that cover an area), and omnidirectional

• Environments with low lighting

• Scanning at distances greater than two feet

INDUSTRIES

• Almost any environment, especially retail

Linear Imager

 

 

• Also known as a c

  harged coupled device (CCD)

   and a LED scanner

• Doesn’t use lasers to read

  barcodes

  ; instead takes a digital image (picture) of the barcode

• Reads linear (1D or one-dimensional)

  barcodes

  ; some models read stacked 2D barcodes and composite symbols

• More durable than laser scanners

• Scanning at distances up to two feet away

• Reading 

  barcodes

  under a reflective surface such as plastic wrap

• Reading poorly printed or damaged barcodes

   

INDUSTRIES

• Retail

• Shipping

• Receiving

• Inventory

2D Area Imager

• Also known as

  a 2D

  or digital imager

• Uses a combination of digital camera technology and software to capture

  barcodes

  See also:
  How Barcode Scanning Engine Elevates Customer Experience?

  If you are looking for more details, kindly visit Barcode Scanner Pda.

• Functions like a digital camera; bounces a burst of light off of the barcode and back into the lens

• Reads both linear (1D) and 2D barcodes

• Can read barcodes from any angle (omnidirectional)

• Captures digital images such as signatures and documents with printed fonts

• Processes

  barcodes

   faster and more accurate than laser and linear imager scan engines

• Scanning hard-to-reach images from any direction and distance

• Reading poorly printed or damaged

  barcodes

• Organizations that need versatility and want to future-proof their operations

INDUSTRIES

• Most any

  industry including

  those that specifically use 2D barcodes, such as the USPS

 

Find a barcode scanner or mobile computer

Laser, linear imager, and 2D area imager scan engines are found in both barcode scanners and mobile computers. There are several types of barcode scanners including handheld, mobile computers, presentation, in-counter, and fixed-mount.

 

There are three primary barcode scan engines: laser linear imager , and 2D area imager . Each works differently to accommodate the needs of specific environments and industries.A laser scan engine shoots a laser beam toward a mirror. The mirror moves, which causes the laser to sweep across the barcode in a straight line. A diode measures the level of reflection and translates it into a digital signal. Laser scan engines only read one-dimensional (1D) barcodes.A linear imager scan engine, also known as a charged coupled device (CCD) or an LED scanner, takes a picture of a barcode by aligning hundreds of tiny LED lights in a row and shooting light directly onto the barcode. A sensor measures the voltage of the light directly in front of each lightbulb. Like laser scan engines, linear imagers only read 1D barcodes. However because they take a digital image of the barcode, they can read poorly printed and damaged barcodes better than lasers.A 2D area imager scan engine also captures digital images. But unlike a linear imager, a 2D scan engine reads both 1D and 2D barcodes by flashing light onto multiple rows of tiny lightbulbs. Another advantage of 2D scan engines is that they are omnidirectional, meaning they can read barcodes from any angle. This makes them faster and more accurate than laser and linear imagers.The following table provides a quick overview of each barcode scan engine.Laser, linear imager, and 2D area imager scan engines are found in both barcode scanners and mobile computers. There are several types of barcode scanners including handheld, mobile computers, presentation, in-counter, and fixed-mount. Learn more about barcode scanner types. Mobile computers also come in a variety of styles including handheld, wearable, vehicle-mounted, and tablets. Learn more about mobile computer types . System ID offers a wide range of scanners and mobile computers by name brands such as Symbol Motorola, Datalogic, Honeywell, Intermec, and Wasp. For help selecting a scanning device, phone an advisor at 1.855.484.8149.

Scan Engines

Scan Engines are the workhorses of the scanning process and operate solely at the discretion of the Security Console. They are responsible for discovering assets during a scan, checking them for vulnerabilities, and assessing their level of policy compliance (if your selected scan template is configured to do so). Although Scan Engines serve as data collectors, they only temporarily store this data on their respective host machines. Instead, the Security Console integrates Scan Engine data into the PostgreSQL database for you to see and report on. This is why Scan Engine host machine storage requirements are far lower than what the Security Console requires.

Scan Engine Types

The Security Console can use multiple Scan Engines of various types that are designed to meet the configuration needs and scanning demands of your network.

Local Scan Engine

All installations of the Security Console include a local Scan Engine so that you can start scanning immediately after your initial deployment. While convenient, the local Scan Engine is best suited for very small scale deployments and trial experiences of the product.

NOTE

Rapid7 does not recommend relying on the local Scan Engine in most cases. If you intend to deploy a production scanning environment on any scale, distributed Scan Engines are the way to go.

Distributed Scan Engine

Distributed Scan Engines are the most widely used engine type and are essential for any production scanning deployment. Unlike the local variety, you install distributed Scan Engines on separate host machines from the console itself. As a result, they can make use of more processing resources for scanning tasks and you can efficiently distribute them depending on the geographic spread of your assets. You can also configure each distributed Scan Engine to communicate with the Security Console in a way that accommodates the presence of any firewalls on your network.

Planning a production deployment? Use distributed Scan Engines!

See the following Help pages to learn more about Scan Engine communication configurations and for instructions on how to deploy:

• Scan Engine Communication Methods
• Distributed Scan Engines

External Scanning Service

If you rather not deploy a Scan Engine on your own resources, Rapid7 offers access to Scan Engines provisioned through our External Scanning Service that are dedicated to your organization. These external Scan Engines are also useful for determining what attackers can see on your external assets that are accessible to the internet.

If you are already licensed for the External Scanning Service, see the External Scanning Service page for instructions on how to complete the pairing to your Security Console.

Scan Engine Pool

If your product license supports engine pooling, you can group multiple distributed Scan Engines together in order to improve site scanning speed.

See the Scan Engine Pools page for instructions on creating and using Scan Engine pools in your environment.

Scan Engines in Virtual and Cloud Environments

You can install the Scan Engine in most virtual and cloud environments. For easy installation, the Scan Engine is available in the marketplaces of several popular cloud infrastructure providers. You can read more about these options in the following resources:

Underlying operating systems are not supported

Rapid7 does not support the underlying OS for any of these pre-built Scan Engine images. If you experience an issue with the underlying operating system, we recommend deleting the instance and redeploying.

Scan Engines in Site Configurations

All sites must specify at least one Scan Engine or engine pool for use during a scan. You can view and select from all your individual and pooled Scan Engines on the Engines tab of any open site configuration.

Asset Scanning Options

The “Scan each asset with” section above the Scan Engine list includes the following options:

• Engine selected below - This is the default method. Enable this option to scan all targets in your site with your selected Scan Engine or engine pool.
• Engine most recently used for that asset - If your site configuration specifies one or more pre-configured asset groups as scan targets, you can enable this option to scan the asset group members based on their engine history. When enabled, each asset group member is scanned by whichever engine scanned it last. This can improve scan efficiency if your targeted asset group includes geographically dispersed assets.

TIP

If you enable the Engine most recently used for that asset option, your selected Scan Engine will ultimately be responsible for scanning any individual asset group member that does not yet have a scan history.

NOTE

Although the Engine most recently used for that asset option is available in all site configurations, it only applies to and affects the assets in your included asset groups.

Scan Engine Management

You can view, create, edit, update, and check the status of your Scan Engines from the engine management screen. To access this view, click the Administration tab in your left navigation menu. In the “Scans” section, click Manage scan engines next to “Engines”.

The Scan Engine management screen lists all your added Scan Engines and displays relevant information like connection status, communication direction, and version information. You can also add new engines, configure engine pools, and adjust the communication direction of your existing engines from this screen.

TIP

The Scan Engine management screen’s Refresh function is the final step for pairing a Scan Engine to the Security Console. Consult the Help page that corresponds to your Scan Engine type for instructions on how to complete these pairing procedures.

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