GS1 barcodes - simple and industry-independent

The data shown in the barcode is read by machine using optical readers (scanners) or cameras and is processed electronically.  

To decode a barcode, a reader (scanner or camera) analyses the light reflected from the black bars and white gaps. The light/dark signals are converted into digital information.

In principle, a distinction is made between one-dimensional (1D) and two-dimensional (2D) barcodes. If the bars are always arranged in a row, it is called a one-dimensional code. To be able to read 1D codes, a barcode reader is required, for example a laser scanner.

2D codes, on the other hand, are usually square symbols that are mainly composed of dots or small squares. To read 2D codes, a recording device is required which can process images. 2D image scanners can also read a 1D barcode, but not vice versa.

The success of the barcode is based on three characteristics: simplicity, reliability and favourable cost/benefit ratio. The high level of security when capturing data using barcodes makes the system one of the most reliable.

Because it is faster and more secure than any manual input, countless applications in retail, logistics, medicine, and manufacturing rely on barcode technology.

GS1 provides a range of barcode symbologies that differ in their properties and areas of application.