# 3D Barcodes: Everything You Need to Know in 2023

3.7 minutes

In this article we explore what 3D barcodes are and some of their unique features. We also cover their different types and benefits. Read on to learn more.

## What is a 3D Barcode?

A 3D barcode encodes information in both the horizontal and vertical planes, as well as depth, differing from traditional flat barcodes. They are commonly found in advanced supply chain management and manufacturing processes.

Example:

Imagine a product with a 3D barcode that looks somewhat like a grid of tiny blocks with varying heights. The horizontal (X) axis might have values ranging from 1 to 10, the vertical (Y) axis from 1 to 10, and the depth (height of each block, or Z-axis) varies between 1 and 5.

In this barcode:

• Position (3,4) might have a height of 1.
• Position (7,8) might have a height of 5.
• Position (2,6) might have a height of 3.

A scanner reads this barcode and interprets:

• (3,4,1) as the character "A."
• (7,8,5) as the number "7."
• (2,6,3) as the symbol "&."

Thus, in advanced manufacturing, a machine might scan this barcode and understand that the product is of type "A", from batch "7", and needs to undergo the process "&". This multi-dimensional data encoding offers a dense information storage on a small footprint, which is why it's useful in sophisticated supply chain and manufacturing scenarios.

## Unique Features of 3D Barcodes

3D barcodes distinguish themselves from traditional 1D and 2D barcodes in several ways. Here are some unique features of 3D barcodes:

### Depth Encoding:

While 1D barcodes encode data along a single dimension (length of lines) and 2D barcodes use two dimensions (length and width of a matrix), 3D barcodes encode information using depth, or height, in addition to the horizontal and vertical planes.

### Permanence:

3D barcodes, especially those that are engraved or embossed, offer a more durable solution than stickers or printed labels. They can withstand wear and tear, harsh environments, and conditions where traditional barcodes might degrade.

### Advanced Data Interpretation:

Reading 3D barcodes often requires more advanced scanning technologies. For example, certain 3D barcodes determine data based on the time a laser takes to bounce back from the engraved depth, offering a nuanced interpretation based on distance and time.

### High Data Density:

Due to the additional dimension, 3D barcodes can potentially store more data in a smaller footprint than 2D barcodes, making them suitable for applications where space is a constraint.

### Tamper Resistance:

Due to their physical nature (especially engraved or embossed types), they are harder to tamper with compared to traditional printed barcodes. This makes them ideal for security-sensitive applications.

### Versatility in Materials:

3D barcodes can be applied to a wider variety of materials, including metals, plastics, and other surfaces that might be challenging for traditional barcode stickers or labels.

### Enhanced Counterfeit Protection:

Their complexity and the requirement for specialized equipment to produce make them more challenging to replicate, offering an additional layer of security against counterfeiting.

### Potential for Multi-functional Uses:

Beyond just storing data, the physical nature of 3D barcodes (like embossing) could serve dual purposes, such as providing tactile feedback or serving aesthetic purposes.

## Types of 3D Barcodes

Here are some of the moat common 3D Barcode Types in the world today:

### BumpyBarcodes or Bokode:

Developed by the Media Lab at MIT, this type of barcode uses tiny, tilted mirrors that reflect light in different ways. When viewed under a standard camera, depending on the angle of capture, a pattern (barcode) can be recognized.

### High Capacity Color Barcode (HCCB):

This Microsoft-developed technology is more of a hybrid between 2D and 3D barcodes. It uses clusters of colored triangles to store data. While this isn't truly "3D," the color component adds another dimension to the data encoding, as different colors represent different values.

### RFID Tags:

While not a barcode in the traditional sense of optical recognition, RFID (Radio Frequency Identification) tags store data that can be retrieved via radio frequencies. The depth or "3D" component here pertains to the spatial arrangement of the embedded chips and antennas in the tags.

### Embossed or Engraved Barcodes:

As mentioned previously, these are barcodes that have patterns physically embossed or engraved onto surfaces to create a tactile depth. Special scanners can read these patterns by detecting height differences.

### 3D Watermarking:

In certain applications, especially for anti-counterfeiting measures, watermarks can be embedded in a 3D structure (e.g., in molded or printed plastics) which can then be read by specialized scanners.

### Stereoscopic Barcodes:

These are theoretical or experimental barcodes that would use principles of stereoscopy to embed data in the disparities between two images. They're not widely adopted, but they represent an interesting approach to data encoding in 3D space.

## Benefits of 3D Barcodes

3D barcodes offer several benefits over traditional 1D and 2D barcodes, making them suitable for certain applications and environments. Here are some benefits of 3D barcodes:

### Increased Data Storage:

Due to the additional depth dimension, 3D barcodes can store more data in a compact area than their 1D and 2D counterparts.

### Durability:

Since many 3D barcodes are engraved or embossed directly onto products, they are more resistant to environmental wear and tear, such as exposure to water, chemicals, and physical abrasion.

### Enhanced Security:

Their complex nature and the specialized equipment needed for their creation can offer better protection against counterfeiting and tampering.

### Versatility:

3D barcodes can be applied to a diverse range of materials, including metals and plastics, extending their use to products and environments where traditional barcodes might not be feasible.

### Advanced Scanning Technologies:

While this can be seen as a limitation due to the need for specialized scanners, it also means that the data can be read in more challenging environments or from different angles.

### Reduced Errors:

The physical depth and enhanced data storage capabilities can lead to reduced errors in scanning, especially in automated processes.

### Integration with Manufacturing:

Since 3D barcodes can be a part of the manufacturing process (e.g., molded into a plastic part), there's potential for streamlining production and tracking processes.

### Tamper Evident:

Any attempts to alter or remove a 3D barcode, especially those that are engraved, will be evident, making them a reliable choice for security and traceability purposes.

### Potential Cost Savings:

While the initial setup might be costlier, in the long run, the durability and reduced need for replacements (compared to stickers or labels) might lead to cost savings.

### Aesthetics and Design:

In certain applications, 3D barcodes can be integrated into the product design, serving both functional and aesthetic purposes.

## 3D Barcode Applications and Examples

Below we will explore some of the applications of 3D barcodes in different industries along with some examples.

### Industrial Manufacturing:

Due to their durability, 3D barcodes engraved or embossed onto machinery parts or tools can withstand wear and tear, making them suitable for tracking components throughout their lifecycle.

Example: A factory producing heavy-duty engines engraves a 3D barcode onto each engine block. This allows for easy identification, even after years of operation and potential surface wear.

### Anti-Counterfeiting:

Products, especially luxury goods or electronics, can use 3D barcodes as an anti-counterfeiting measure. The complexity and the specialized equipment needed for creating 3D barcodes make them harder to replicate.

Example: A premium watch brand uses 3D barcodes engraved on the back of their timepieces, ensuring that each authentic product can be verified against counterfeits.

### Healthcare and Pharmaceuticals:

Medical devices, implants, or surgical tools can use 3D barcodes for tracking and ensuring proper sterilization. Pharmaceuticals can employ them for tamper-evident packaging and improved traceability.

Example: Medical implants, such as hip replacements, come with a 3D barcode that holds critical data about the implant's material, manufacture date, and batch number, facilitating recalls if necessary.

### Aerospace and Defense:

Components in aerospace need rigorous tracking for safety and compliance reasons. 3D barcodes can offer a permanent identification method resistant to environmental factors.

Example: Aircraft parts, especially in military jets, might have 3D barcodes for strict component tracking, ensuring each part meets the necessary safety and performance standards.

### Automotive Industry:

Parts used in the automotive sector, from engine components to chassis parts, can be tagged with 3D barcodes for better tracking during manufacturing and for ensuring authenticity during replacements.

Example: Car tires might come with a 3D barcode embedded into the rubber, containing information about manufacturing date, batch, and specifications, aiding in recall situations.

### Retail and Apparel:

While 2D barcodes and RFID are more common in retail, 3D barcodes can be integrated into products for additional security or for special campaigns that involve consumer interaction with the product.

Example: A high-end handbag brand releases a limited edition line with 3D barcodes that, when scanned, provide customers with exclusive digital content related to the bag's design and history.

### Agriculture and Livestock:

Durable 3D barcodes can be attached or even engraved onto tags used for livestock, ensuring long-term identification and tracking.

Example: Cattle in a large ranch might have tags with embossed 3D barcodes to ensure long-lasting identification even in muddy or wet conditions.

### Logistics and Supply Chain:

3D barcodes, due to their potential for high data density, can store comprehensive information about products, facilitating more efficient inventory management and shipment tracking.

Example: A shipping company uses crates with 3D barcodes that store data about the contents, destination, and sender, ensuring efficient sorting and tracking.

### Consumer Electronics:

For warranty and authenticity verification, electronic products can integrate 3D barcodes either on the product itself or within the packaging.

Example: A smartphone manufacturer engraves a 3D barcode onto the phone's frame, containing warranty information and manufacturing details, aiding in after-sales service.

### Art and Collectibles:

For authentication and to deter forgery, valuable artwork or collectible items can incorporate 3D barcodes, often discreetly.

Example: An art gallery selling sculptures embeds 3D barcodes discreetly on each piece, providing provenance information and ensuring the authenticity of each artwork for buyers.

We hope that you now have a better understanding of what 3D barcodes are and how they are being used in different industries.