Barcodes

Question 1

How does a barcode work?

Answer 1

A laser beam scans the strips and line widths and converts these to numerical values. These are recognised by a computer program.

Question 2

54 56789 12346
These are the numbers for a barcode.
What do these three groups of numbers tell you?

Answer 2

The first two show you the country of origin.
The second group shows the manufacturer reference number.
The third shows the product number.