yes u must have a bar code scanner this a device can capture barcode and translate it to the value. if u want to create a bar code and print on the papaer u can searchon google and find some fonts it's match with ur standard.
without bar code scanner u must scan bar code with normal scanner and image proccessing and resolve the value of the code.
so u can buy a bar code scanner around 100$.
if you know how to use serial i suggest buy serial mode b/c its more controlable and simple to use.
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