Most products on the market today bear a unique bar code. In addition to the pricing information, the bar code also contains information regarding the product and manufacturer. If you want to try it out for yourself, there's no need to purchase a scanner. You can input the bar code number into an online bar code database.
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Find a bar code database. Bar code databases available online include the UPC Database and the Global Electronic Party Information Register.
Enter a bar code number into the search field. Note that not all bar codes are the same length. The bar code may be 8, 12, 13 or 14 digits long. Make sure to include every number to ensure a successful search.
Click the "Search" button. On the results page, you will find information associated with that bar code.
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