Barcodes, and the laser scanners that read them, make it possible to keep track of millions of packages, groceries and railroad cars. New uses are continually being added. Questions and answers about the uses, history and technology of bar codes belong here.

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How to improve a bar?

Easy steps: Get proper skilled bartenders in. Do not waste time with trainings for people who dont know what they doing :-) Get nice beer on draught (peroni, kronenbourg blanc etc.) Do a nice bar snack menu as well as wine list and coctail menu. Nice ones !!! Get rid off offers like 2 4 1 and buy 1 get 1 free...does work in pub though :-) ....only there... Put champagnes in a big and I mean big ice bucket full of ice on the bar with a nice garnish of grapes to look will see how it will that work well :-) ....and serve it with cold flutes and bowl of fresh complimentary strawberries as well !!! and think what you like to get if you in a nice bar....oh nice bar? Roberto M.


What is a GS1 bar code?

The GS1 DataBar symbology is the newest Bar Code type for space-constrained identification from GS1.

Data Bar Bar Codes have been identified to solve many problems in POS, grocery and healthcare, where items are too small for the larger older Bar Code symbologies, or if additional information needs to be encoded such as weight, expiration, country of origin or serial numbers. Data Bar used to be known as RSS or Reduced Space Symbology, but was changed to avoid confusion with RSS feeds.


What is the difference between OCR reader and bar code reader?

abe pata hoga tou puche ga kon, Haram khoro,,............


What element can be used in bar code scanners?

Start and Stop Symbologies

Barcode symbols have 'start' and 'stop' characters at the beginning and ending.These characters enable barcode scanners read bidirectionally, decoding the data in the correct order. Bar codes sometimes have 'check digit' at the end which is determined according to an algorithm based on the preceding characters.

Quiet Zones

1/4" wide area next to the start and stop characters having no markings is called quiet zones. If the area is too short, the bar code symbol will not be read by scanner.

Interpretation Line

This is a line of human-readable characters which is located beneath the bar code.

Bar/Space Patterns

These are wide and narrow black bars and whites spaces present in the bar code.

Inter-Character Gap

In some bar codes,each character is printed independently of other characters and is not part of the encoded character.Therefore it is separated by an inter-character gap.

Code Density

Code density is number of data/message characters which can be represented per unit length of space. Four variables affect code density and are as follows:-

  • Type of Code

    All bar codes have different structures. Some are able to encode more information per inch than others

  • Ratio of Wide to Narrow Elements

    Ratio is important in deciding the type of scanning device to read the code. Changing the code density of a particular bar code is done by varying the ratio.

  • X Dimension

    The width of the narrowest bar or space is referred to as the X dimension, usually given in mils. The X dimension dictates the width of all other bars and spaces, and ultimately the length of the bar code..


How are bar codes assigned?

If you understand that a barcode is a very short description of where something was made, who made it, what it is, what size it is, what colour it is then you would understand why barcodes are recognised in many different countries in the world.


Why are numbers on a bar code important?

Numbers on a bar code are important because it is how the scanner recognizes the what product you are trying to buy. The lines and dashes are important to this as well.


What is the bar code for Lego ninjago mountain shrine?

I don't know, I lost the box!


Can you still redeem Newport cigarette UPC bar codes for merchandise and if so where can you go to do this?

No, in June 2010 the FDA (I believe it was FDA) ruled you can no longer offer merchandise in exchange for upc's from packs, or any other incentive that would encourage people to smoke.

It would seem that offering people coupons for cigarettes in exchange for the proofs of purchases from their already bought cigarettes encourages nonsmokers to start, that's American bureaucracy for you.

Read more: Can_you_still_redeem_Newport_upc


What is the bar code on Lego Ninjago's Kai's Spinner?

673419143790 if it is wrong then it is a different country ok.


What is the Summary of the poem rivals by James Stephen?

It a very nice poem by him.


What do you do with the upc bar codes from Newport cigarettes?

Save them up, for redemption for 'swag': They have a website for more info!


What phone app compares prices by taking pictures of bar codes?



When was the bar code system first used?


Why do bar code readers beep?

To signal that it it has analyzed the barcode


What is jays Ninjago bar code?

Jays barcode is 673419144834


Can you use neo reader to read bar code in mobile?

In general yes. The issue is that some mobile phones don't have a good enough camera, and therefore won't be able to focus on the bar-code. Try using it with mobiles that have auto focus.

Nazi Concentration Camps

Where was the bar code on the suits in gemany's concentration camps?

they did not need one, as the devices to read the barcodes had not been invented yet.


How does a bar code reader work?

There are currently four different types of bar code readers available. Each uses a slightly different technology for reading and decoding a bar code. There are pen type readers (e.g. bar code wands), laser scanners, CCD readers and camera-based readers. Pen type readers consist of a light source and a photo diode that are placed next to each other in the tip of a pen or wand. To read a bar code, you drag the tip of the pen across all the bars in a steady even motion. The photo diode measures the intensity of the light reflected back from the light source and generates a waveform that is used to measure the widths of the bars and spaces in the bar code. Dark bars in the bar code absorb light and white spaces reflect light so that the voltage waveform generated by the photo diode is an exact duplicate of the bar and space pattern in the bar code. This waveform is decoded by the scanner in a manner similar to the way Morse code dots and dashes are decoded.

Laser scanners work the same way as pen type readers except that they use a laser beam as the light source and typically employ either a reciprocating mirror or a rotating prism to scan the laser beam back and forth across the bar code. Just the same as with the pen type reader, a photo diode is used to measure the intensity of the light reflected back from the bar code. In both pen readers and laser scanners, the light emitted by the reader is tuned to a specific frequency and the photo diode is designed to detect only this same frequency light.

Pen type readers and laser scanners can be purchased with different resolutions to enable them to read bar codes of different sizes. The scanner resolution is measured by the size of the dot of light emitted by the reader. The dot of light should be equal to or slightly smaller than the narrowest element width ("X" dimension). If the dot is wider than the width of the narrowest bar or space, then the dot will overlap two or more bars at a time thereby causing the scanner to not be able to distinguish clear transitions between bars and spaces. If the dot is too small, then any spots or voids in the bars can be misinterpreted as light areas also making a bar code unreadable. The most commonly used X dimension is 13 mils (roughly 4 printer dots on a 300 DPI printer). Because this X dimension is so small, it is extremely important that the bar code is created with a program that creates high resolution graphics (like B-Coder). For a good description of the different graphic file formats that are commonly used to create bar codes see: Raster vs. Vector Graphics CCD (Charge Coupled Device) readers use an array of hundreds of tiny light sensors lined up in a row in the head of the reader. Each sensor can be thought of as a single photo diode that measures the intensity of the light immediately in front of it. Each individual light sensor in the CCD reader is extremely small and because there are hundreds of sensors lined up in a row, a voltage pattern identical to the pattern in a bar code is generated in the reader by sequentially measuring the voltages across each sensor in the row. The important difference between a CCD reader and a pen or laser scanner is that the CCD reader is measuring emitted ambient light from the bar code whereas pen or laser scanners are measuring reflected light of a specific frequency originating from the scanner itself. The fourth and newest type of bar code reader currently available are camera-based readers that use a small video camera to capture an image of a bar code. The reader then uses sophisticated digital image processing techniques to decode the bar code. Video cameras use the same CCD technology as in a CCD bar code reader except that instead of having a single row of sensors, a video camera has hundreds of rows of sensors arranged in a two dimensional array so that they can generate an image. The factors that make a bar code readable are: an adequate print contrast between the light and dark bars and having all bar and space dimensions within the tolerances for the symbology. It is also helpful to have sharp bar edges, few or no spots or voids, a smooth surface and clear margins or "quiet zones" at either end of the printed symbol. All application programs support bar code reading as long as you have the right equipment. Bar code readers are available with two types of output - either "keyboard wedge" output or RS232 output. The bar code readers with keyboard wedge output plug directly into the keyboard port on your PC and they also provide a pigtail connector so that you can plug in your keyboard at the same time. When you scan a bar code with the keyboard wedge bar code reader, the data goes into the computer just as if it were typed in on the keyboard. This makes it extremely easy to interface the bar code reader to any application that is written to accept keyboard data.

The keyboard wedge interface is extremely simple however it has a few drawbacks. If you swipe a bar code, the cursor has to be in the correct input field in the correct application otherwise you end up reading bar code data into whatever application has the focus. This can cause all sorts of potential problems as you can imagine. The keyboard output also is limited in that you cannot modify the data in any way before sending it into the program that is to receive the data. For example, if you needed to parse a bar code message into multiple pieces or remove some of a bar code message or add in a date or time stamp you would not be able to with a normal keyboard wedge reader.

The other possible output option is to get a bar code reader with an RS232 or "Serial" interface. With these types of bar code readers, you connect the reader to an available serial port on the back of your PC. You would then need a program called a "Software Wedge" to take the data from the bar code reader and feed it to the application where you want the data to go. The disadvantage to this approach is that it is a little more complex however you gain much more control over how and where your data ends up when you read a bar code.


What is the date of manufactured after the bar code?

It would be the date the product was produced or canned.


What kind of information stored in bar code?

The data that is usually stored on a barcode is :

Where the product has come from

Who Manufactured the product

Date Purchased

Additional Note: it depends on the barcode. Some of the 2 dimensional bar codes are free text formatted so anything can appear as the content. QR Bar codes, for example, use a URL reference to a web site for content. PDF417 and other bar codes have text in them - some states use them on the back of the driver's license to contain the content of the license.


What is the cheapest thing you can buy at lush?


How many bar code are there in axe deodorant?

depending on what "HOW MANY" means ...

how many digits in one barcode or

how many combinations can there be...

^^ specify pls.


Why is price not included in shop bar codes?

Because a bar code lasts for years, and prices vary.

Because a bar code crosses borders, and currencies differ


What are the bar codes for Ninjago scavenger hunt?

Go onto google and click modular life ninjago codes. Hope this helps. Sorry that I haven't memorized them.


What are the Ninjago apps bar code answers?

i only know the barcode for nothing for a ninja: 673419144834.

i'm sorry if i get it wrong


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