Why barcodes?
Barcodes are a row of diverse sized black lines with white spaces in between according to a specified system. Using a scanning device, it is fast and simple to feed information into a data system. It takes a longer time to read the numbers with your eyes and then write them on a computer. There is also a possibility of more reading and writing errors.
Barcodes are simple to use, quick and a it is a very reliable technology.
There are many different types of barcodes. Barcodes are standardised in order to be internationally, and to guarantee sure communication. Modern societies would not make it without these standards.
An example of common, standardised codes are EAN, Interleaved 2/5, Code 39, Code 128, PDF 417, Maxi Code and Data Matrix. They all have different usage areas, disadvantages and advantages.
EAN/UCC
Interleaved 2/5
Code 39
PDF 417
Maxi Code
Data Matrix
Open or closed system
Barcodes only used internally within a separate company - for example in manufacturing, in inventory applications, or between different group companies – is called a closed or internal system. This means the user has the liberty to choose any code that fulfills the demands.
If other companies, such as suppliers, wholesalers or freight-forwarders, also should be able to use the code. Well, then the system has to be open and a standard is to be used.
Areas of use & advantages
Today the barcode has many application areas and a decision to use barcodes is normally made to increase the effectiveness of a business. However, quite often it is the receiver of the goods who demands that barcodes are used.
The food industry and retail companies were the first to make great use of barcodes. Today also manufacturing industry and logistics have grown strong. Other fast-growing business areas for barcodes are hospitals, laboratories and authorities, often very tough on cost efficiency.
The advantages of barcodes are:
• Quick and easy
• Correct information – no reading- and writing errors
• Standardised
• Increased productivity
• Cost effective
Information in an EAN (GTIN) barcode
Below the barcode you can always find human readable information. The first two or three digits indicate the country of origin. The following four or five digits indicate the supplier. The next five numbers are unique to the product, and the last digit is a check number.
A few common prefixes that indicate the country of origin are:
| Denmark | 57 |
| Finland | 64 |
| France | 30-37 |
| Iceland | 569 |
| Norway | 70 |
| Great Britan | 50 |
| Sweden | 73 |
| Taiwan | 471 |
| Germany | 400-439 |
| USA | 00-09 |
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