How does a Barcode reader system works, in order to fill a database with certain personal data?

Question

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.

Answer 1

I actually work in the industry. The best place to start is here:

http://www.amazon.com/gp/product/0911261133/sr=8-13/qid=1147615949/ref=sr_1_13/102-0958853-1627363?%5Fencoding=UTF8



Remember, most barcodes are simply *keys*. They contain a unique identifier for a person or object. This key can be used to do a database lookup in order to return the full information for the object or person in question.



Another way you could go is to use a high-content barcode type, such as PDF 417. This barcode type, which can still be read using a PDF-capable laser scanner, can contain about 1K of text. This is usually enough to contain whatever data you want, as long as it does not change too frequently (in which case, an identifier-type system would be best).

Answer 2

A bar code reader also called a point of sale or price scanner scan digitally and transfers the scan to a computer database that decodes the information according to the software set to run it it makes the essential translation so that the data transmitted makes sense and recordss the data according to the uses set ny the database in which the information is stored

Answer 3

a barcode reader just returns a number, have you noticed that a cashier can key in a bad barcode that wont scan at the grocery store? that number will need to be associated with the data (record) for that student, then it will be displayed if the database is in lookup mode

Answer 4

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.