I really need help urgently as per d topic above, bar codes are generated for a line of product say oranges, the same barcode is used for all the oranges for sale,
I was just wondering if there is a way to differentiate between the oranges using a barcode scanner.
any help would be appreciated

hey bro, barcodes are like unique ids for different types of product e.g if u take red bull for example the barcode for d small can is totally different frm d barcode of the big can. And never worry about another company using thesame code cos its almost impossible to regenerate the same code, it takes almost a billion attempt to generate dsame set of codes,
hope dt was a bit helpful??

Thanks so much man,

Just to add. When you read any bar code with a bar code reader you can see the code. So in a way if two codes are same you can spot it on time. It is plug and play with Microsoft Excel

Its a simple technology that has not caught up over here.

Ever heard of UUID? Use Google.