What is Code 128 Barcode – Basics, Applications, and More

There are 100 types of barcodes available in the world. The code 128 barcode is a high-linear density barcode encoding text, numbers, and other ASCII characters. However, the sheer volume of the barcoding system makes it too overwhelming to keep track of all numbers. 

In this blog, we will be covering the basics of what is code 128 barcode, its key features, applications, and more. Without wasting another moment, let’s begin with code 128 barcode. 

what is code 128 barcode

What is Code 128 Barcode?

At its core, the Code 128 barcode is a high-density linear symbology that allows for the encoding of alphanumeric data. It is renowned for its efficiency in data representation and compact design. 

Unlike its predecessors, such as Code 39, Code 128 is a variable-length barcode, meaning it can encode a variable number of characters. This flexibility is a key advantage, especially in industries where data density and accuracy are paramount.

Understanding the Code 128 Barcode:

The Code 128 symbology employs a set of code combinations to represent each character. These codes include start and stop codes, allowing for easy identification of the beginning and end of the barcode. There are plenty of code 128 barcode examples for you to identify and take note of all these things. 

Additionally, three code sets—A, B, and C—provide versatility in encoding numeric, alphanumeric, and special characters efficiently. This adaptability makes Code 128 a preferred choice for a wide range of applications.

Let’s explore the key features of what is code 128 barcode.

What is Code 128 Barcode: Key Features

I) High Density:

Code 128 is known for its high data density, enabling the encoding of large amounts of information within a relatively small space. This makes it an efficient choice for applications where space is a constraint.

II) Variable Length:

Unlike fixed-length barcodes, Code 128 can accommodate varying lengths of data. This flexibility is crucial in scenarios where the encoded information differs from one application to another.

III) Alphanumeric Encoding:

Code 128 can encode both numeric and alphanumeric characters, providing a comprehensive solution for diverse data encoding needs.

IV) Error Detection and Correction:

Code 128 incorporates a checksum digit to enhance data integrity. This ensures that the encoded data is accurately transmitted and reduces the likelihood of errors.

Next, let’s move to the ways through which you can generate a code 128 barcode. 

How to Generate Code 128 Barcode:

Generating a Code 128 barcode involves using specialized software or online tools. Here’s a simplified guide on how to generate a Code 128 barcode:

1) Select a Code 128 Barcode Generator:

Choose a reliable barcode generator tool. Several online platforms and software applications offer Code 128 barcode generation capabilities.

2) Enter the Data:

Input the data you want to encode into the barcode. This can include product information, serial numbers, or any other relevant data.

3) Choose Code Set:

Depending on your data type, select the appropriate code set—A, B, or C. This step ensures optimal encoding efficiency.

4) Generate the Barcode:

Click the generate button to create the Code 128 barcode. The tool will use the selected parameters to create a unique barcode image.

5) Save or Print:

Save the generated barcode image in the desired format or print it directly for application on products, labels, or documents.

What is Code 128 Barcode: Applications Explained in Detail

Now that we have explored the intricacies of Code 128, let’s dive into its diverse applications:

1) Retail and Inventory Management:

The code 128 barcode specification is widely used in retail for product identification and inventory management. Its high data density allows for encoding extensive product information.

2) Logistics and Shipping:

In the logistics and shipping industry, Code 128 is employed for tracking packages and shipments. Its variable length capability is advantageous for encoding unique identifiers. There is a code 128 barcode scanner that is used for scanning and taking note of all the items. 

3) Healthcare:

In healthcare, Code 128 barcodes find applications in patient identification, medication tracking, and specimen labeling. The accuracy and efficiency of Code 128 are crucial in healthcare settings.

4) Manufacturing:

Manufacturing processes often utilize Code 128 for tracking work-in-progress, managing components, and streamlining production workflows.

Now, let’s shed light on the major differences between code 128 and GS 128. 

Code 128 Vs GS 128

Code 128 shares a few similarities with GS 128. However, both of them are not the same. Here is a tabular representation of the key differences between GS 128 and code 128.

FeatureCode 128GS1-128 
Basic Symbology TypeLinearLinear
Character SetA, B, C (Numeric, Alphanumeric, Special Characters)A, B, C (Numeric, Alphanumeric, Special Characters)
Variable LengthYesYes
Start and Stop CodesIncludedIncluded
Data StructureSelf-containedEncodes Application Identifiers (AIs) for variable data interpretation
Checksum DigitIncluded (Error Detection)Calculated based on GS1 specifications for enhanced data integrity
UsageGeneral PurposePrimarily used in supply chain and logistics for product identification and traceability
Application IdentifiersNot typically usedUtilizes Application Identifiers (AIs) to specify the type and format of variable data
Recommended by GS1NoYes
Data CapacityVariable, up to 128 charactersVariable, up to 48 characters (depending on AIs used)
Printing StandardsAdheres to Code 128 standardsAdheres to GS1 General Specifications for barcodes

Summary of Code 128 Vs. GS 128:

I) Character Set and Variable Length: Now that you know what is code 128 barcode, you ought to understand that both Code 128 and GS1-128 support numeric, alphanumeric, and special characters. They also allow for variable data lengths.

II) Checksum Digit: While both include a checksum digit for error detection, GS1-128 follows GS1 specifications for its calculation, which adds an additional layer of data integrity.

III) Data Structure: GS1-128 incorporates Application Identifiers (AIs) to provide a standardized way of encoding variable data, enabling more specific information interpretation.

IV) Recommended by GS1: GS1-128 is explicitly recommended by GS1 for supply chain applications, ensuring global standardization and compatibility.

V) Application Identifiers: GS1-128 uses AIs to provide detailed information about the data encoded, making it particularly useful in industries where specific product information needs to be conveyed.

VI) Data Capacity: Code 128 has a higher potential data capacity (up to 128 characters) compared to GS1-128. However, GS1-128’s focus is on structured variable data for supply chain applications.

VII) Printing Standards: Code 128 follows its own set of standards, while GS1-128 adheres to the GS1 General Specifications, ensuring consistency and interoperability.

Finally, let’s dive deep into the frequently asked questions for what is code 128 barcode. 

FAQs – What is Code 128 Barcode:

How can you tell if a barcode is code 39 or 128?

You can check the density of characters. While Code 39 has less character density of 9.7 characters per inch, code 128 is a higher-density barcode. It has a density of 24.24 characters per inch for numerical characters and 12.12 per inch for ASCII characters. 

What is code 128 used for?

It is a high-density linear barcode symbology used for numeric-only barcodes or alphanumeric characters. It has the capacity to encode all 128 characters of ASCII. 

What is the barcode 128 type?

Unlike its previous versions like code 39, the code 128 barcode is more compact and contains both digits and characters. 

What is GS1 code 128 format?

GS1 128 deals with data types and numbers used for logistical and supply chain entities. Almost all food companies use this barcode to share relevant company, shipping, and product information. 

What is the limit of barcode 128?

There is no standard or official limitation of barcode 128 format. However, the GS1 128 format has restrictions of 48 characters. 

Conclusion:

In conclusion, What is Code 128 barcode? It’s not just a series of lines and spaces; it’s a sophisticated tool driving efficiency across industries. It is a powerhouse in the world of barcoding, offering efficiency, flexibility, and accuracy. Whether in retail, healthcare, logistics, or manufacturing, Code 128 plays a pivotal role in enhancing data management and streamlining processes. 

Do you want to understand the basics of the barcoding system, contact Qodenext today to leverage the power of this dynamic barcode symbology. 

Also read: Unveiling the Role of Supply Chain Management in E-commerce.