barcode scanner

Also found in: Dictionary, Medical.

barcode scanner

A device specialized for reading barcodes and converting them into digital data. Pen scanners, also known as wand scanners, were the first type of scanner developed in the 1970s. The tip of the pen must physically touch the barcode. Later, laser scanners allowed the code to be read at a distance from the head of the device, enabling supermarkets to read round cans and flexible packages more easily. The most common type today is the visible laser diode (VLD) scanner, which emits as many as 50 laser beams simultaneously to capture the image at any angle. See barcode, mobile tagging and point of sale.

Laser Diode Mechanism
A laser diode (1) emits a beam (red) onto a combination of rotating (2) and fixed mirrors (3) that shine multiple beams onto the barcode (4). Although as many as 50 beams may hit the package at different angles, only one is shown in this illustration. The reflected light (yellow) is captured by the collector (5) and aimed at a sensor (6).

The Reflection
The black bars absorb light, while the white bars reflect it. Photo diodes turn the reflected light into an electrical signal, which is converted into digital pulses.

Scanning a Package in Staples
Modern omnidirectional scanners make it easy to capture the code at all angles with less precision required on the part of the human operator.

The CueCat - A Most Unusual Barcode Scanner
As the Web was exploding at the turn of the century, this scanner was created to give businesses a Web presence. Connected to the PC, users could scan a printed Cat code and quickly get a Web page. Another part of the system was software for the PC that had to be connected to the audio output of a TV. It would listen for special Cue signals and deliver the Web page. With four million CueCats given away and $185 million invested, the Dallas, Texas-based firm fizzled to nothing in a short time.
References in periodicals archive ?
Browse Barcode Scanner Market Report spread through 150 Pages at http://www.
Conducting an exhaustive analysis, an outside auditor determined that the sole reason for the upturn in the 40 centers was that they had replaced their OEM barcode scanner batteries with new IPT batteries.
The WLS8600 Industrial Barcode Scanner is designed to withstand the harshest industrial environments.
Dash comes with a laser barcode scanner, which is quicker and far more reliable than the other camera based scanners.
The Popular IONSCAN 500DT Explosives Trace Detector (ETD), a TSA-qualified technology for air cargo screening on passenger planes in the United States, now offers the ability for integration with most USB or wireless commercial, off-the-shelf (COTS) barcode scanners.
Worldwide Computer Products News-20 July 2010-Socket Mobile offers new barcode scanners for Apple iPad, iPhone and iPod touch(C)1995-2010 M2 COMMUNICATIONS http://www.
Nifty, if pricey, add-ons like a digital camera, GPS navigation, even a barcode scanner.
By combining barcode scanner technology with an easy-to-use software system, TextLink offers total inventory control.
Designed to prevent the reflection of light and protect the systems' electronics, these lenses possess the hardness to resist breakage, scratches, dents, and mars that can cause misreading by a barcode scanner.
The household appliance to make shopping even simpler looks like a basic fridge/freezer, but for the VDU and barcode scanner mounted at head height.
Auto-graphics provides a variety of additional tools to help libraries automate, including retrospective conversion, PC and LAN systems, barcode scanner, and other services.
minimum printer dell e310dw monochrome printer; minimum barcode scanner motorola symbos ls2208.