Barcodes composed of multiple lines do not need to be connected to a database. They can store large amounts of data and can be used in hospitals, driver's licenses, material management, and goods transportation. When the bar code is damaged, the error correction can enable the barcode to decode PDF417 correctly. The product developed by Symbol Technology in 1990. It is a multi-line, continuous, variable-length, symbolic identifier that contains a large amount of data. Each bar code has 3 - 90 lines and each line has a start portion, a data portion, and an end portion. Its character set includes all 128 characters and the maximum data content is 1850 characters.