Code 128 is a high-density linear barcode symbology used for encoding alphanumeric characters. It can represent all 128 ASCII characters, making it versatile for various applications, including shipping and inventory management. The barcode consists of a series of bars and spaces of varying widths, which can be scanned by barcode readers. One of the key features of Code 128 is its ability to include a checksum, enhancing data integrity. This means that the barcode can verify that the data has been scanned correctly. Its compact design allows for more information to be stored in a smaller space compared to other barcode types.