Code 39 barcode in C++

About Code 39 Symbology

Code 39 is a barcode type of variable length. It was developed by Intermec Corporation in 1974 and was the first barcode specification capable of encoding both numeric and alphabetic characters. Its encoding set contains 43 symbols, including uppercase letters (A-Z), digits, and special characters. Each symbol is represented by a pattern of five bars and four spaces. Code 39 has built-in self-check, so it does not require the use of a checksum to verify data accuracy. The maximum capacity of a Code 39 barcode depends on its size and the resolution of the scanner used to read it. In general, a Code 39 barcode can store up to approximately 50 characters, although this can vary depending on the specific application. This barcode standard has been widely used in a variety of industries, including the LOGMARS system implemented by the US military.
For more information about the barcode type, see our information article:

Code 39

Code 39 Features

• Alphanumeric Encoding: Code 39 can encode a combination of uppercase letters (A-Z), numeric digits (0-9), and a set of special characters, including hyphens, periods, spaces, and certain symbols. This versatility allows for the representation of diverse data types, making it applicable in various industries.
• Wide Industry Support: Code 39 is widely supported by various types of barcode scanners, printers, and software systems, making it easy to integrate into existing workflows. This compatibility ensures seamless scanning and reliable data capture across different devices and platforms.
• Simple Start/Stop Characters: Code 39 features start and stop characters ("*") at the beginning and end of each barcode, providing clear indicators for scanning devices to identify the barcode boundaries accurately.

Applications:

• Inventory Management: Code 39 is commonly used in inventory management systems to track and manage products, assets, and supplies. By placing Code 39 barcodes onto items, businesses can facilitate stock control, automate data entry, and enhance accuracy in inventory tracking.
• Retail and Point-of-Sale: Code 39 is often employed in the retail industry for product labeling and sales transactions. It enables efficient and accurate product identification, pricing, and inventory management.
• Healthcare: In the healthcare sector, Code 39 is utilized for patient identification, medication labeling, and medical record management. By incorporating Code 39 barcodes, healthcare providers can improve patient safety, prevent medication errors, and automate data entry processes.
• Shipping and Logistics: Code 39 is utilized in shipping and logistics operations for efficient tracking and management of packages, containers, and shipments. By encoding shipment details, tracking numbers, and recipient information, Code 39 barcodes facilitate accurate and automated tracking throughout the supply chain.
• Document Management:The use of Code 39 is implemented in document management systems to label and track physical documents and files. By assigning unique Code 39 barcodes to documents, organizations can facilitate filing, retrieval, and document tracking processes, enhancing overall efficiency.

Code 39 is a widely-used linear barcode type known for its simplicity and compatibility. It can encode alphanumeric characters and a range of special symbols, making it suitable for various applications, such as inventory management, asset tracking, and product identification. Its straightforward design and ease of printing and scanning have contributed to its long-standing popularity in diverse industries.