Question : How does a Barcode reader system works, in order to fill a database with certain personal data?
I want to know how to setup a system that will fill personal data displayed in a form within a database, by scanning the barcode in a College Photo ID.
barcode reader

Best answer:

Answer by Dookie Legs
A basic barcode scanner consists of a scanner, a decoder, and a cable that interfaces between the decoder to the computer or terminal. The scanner’s function is to scan the barcode symbol and provide an electrical output to the computer that corresponds to the bars and spaces of the barcode. However, it’s the decoder that recognizes the barcode symbology, analyzes the content of the barcode scanned, and transmits that data to the computer in a traditional data format. A scanner can either have the decoder built into its handle or be “un-decoded” which requires a separate box, called an interface or wedge. Un-decoded scanners are also used when connecting to portable batch terminals as the decoding is performed by the terminal itself.