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Thread: Learn to read bar code without a scanner

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    Default Learn to read bar code without a scanner

    We often buy computer products but anyone ever tried to read the bar code printed on the box. It might appear a crazy idea but I would like to make it helpful for you all. From the bar code we can understand which country the product came from but not always necessarily manufactured. First we will concentrate on standard 12 Digit UPC(Universal Product Code) bar code.

    Let's begin......

    1) Note that bar codes are made up of both white and black lines. The white spaces in between the black lines are part of the code.



    2)
    Understand that there are four different thicknesses to the lines. Henceforth, the skinniest line will be referred to as "1," the medium-sized line as "2," the next largest line as "3." and the thickest is "4."



    3) Recognize that each UPC bar code begins and ends with 101 (thin black, thin white, thin black). In the very middle of the bar code, you will notice two thin black lines sticking down between the numbers. The thin white between them, as well as the thin whites to either side, make up a 01010. Each UPC bar code has 01010 in the middle.




    4) Recognize that each digit, including the small numbers that begin and end the bar code, has its own unique four-line set. 0 = 3211, 1 = 2221, 2 = 2122, 3 = 1411, 4 = 1132, 5 = 1231, 6 = 1114, 7 = 1312, 8 = 1213, 9 = 3112. (Note that the sum of bar widths numbers is 7 for all codes because each code is 7 units wide.) Notice that the line colors are reversed after the center-line: The lines of the digits to the left are white/black/white/black whilst to the right they are black/white/black/white. This is a part of security which provides some error checking and allows the reader to know the direction in which it is scanning a code. It is also crucial so that the bar code ends with a bar rather than a space. So, actually, each digit has two codes.





    5) So, the bar code above whose first two digits are 03 would start out "10132111411". Broken down this is "101-3211-1411" where 101 marks the beginning of the bar code and 3211 marks the digit 0






    Is it too much complex for you all but this is the actual part we all should know



    • A similar bar code system is EAN (European Article Number). It contains 13 digits and also indicates the country in which the bar code was registered. Read the first "3" digits of the code to determine this.
      • Example: If the first 3 digits of the bar code are 690, 691, or 692, the country in which the code was registered was China.

    • It is important to note that the country code in EAN bar codes does not indicate where the product was manufactured. For example, if the bar code begins with 64, then it was registered in Finland (probably to a company that was headquartered in Finland). Look more closely at the packaging, however, and you may find that the product was "Made in China".




    finally a check list :

    890......MADE IN INDIA

    690, 691, 692 ... then it is MADE IN CHINA

    00 - 09 ... USA and CANADA

    30 - 37 ... FRANCE

    40 - 44 ... GERMANY

    471 ........ Taiwan

    45 or 49 ........JAPAN

    489...........HONG KONG

    50 .......... UK

    57 .........DENMARK

    64..........FINLAND

    628.........SAUDI ARABIA

    629.........UNITED ARAB EMIRATES

    740..........745 - CENTRAL AMERICA




    if you are keen to learn all country code visit
    http://www.makebarcode.com/specs/ean_cc.html
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    Last edited by Metal; March 15th, 2013 at 10:21.
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    Its like learning to crawl when you can walk.

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    I'd rather use the scanner!!
    Why so Serious!

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    @Shoaib & @-RAKIB- I have posted it as people usually do not have a scanner with him while purchasing product from IDB or superstore. This can help to understand or guess on where the product came from. It is a basic to start with not all the tricks to read the bar code like a scanner does. To be a master you all not to google and collect more and more knowledge about it.
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    Quote Originally Posted by Metal View Post
    @Shoaib & @-RAKIB- I have posted it as people usually do not have a scanner with him while purchasing product from IDB or superstore. This can help to understand or guess on where the product came from. It is a basic to start with not all the tricks to read the bar code like a scanner does. To be a master you all not to google and collect more and more knowledge about it.
    Look, I appreciate ur work, u did a very good job.. it's a nice review and will help ppl who want to learn and who don't hav the reader. But, I just said what my own thought goes for it (as the process seems a little difficult to me).. hope u'll understand bro
    Why so Serious!

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    LOL man, dont take my words seriously. @Metal

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