What is a 2D barcode?
A 2D (two-dimensional) barcode is a graphical image that stores information horizontally as one-dimensional barcodes do, as well as vertically. As a result, the storage capacity for 2D barcodes is much higher than 1D codes. A single 2D barcode can store up to 7,089 characters instead of the 20-character capacity of a 1D barcode. Quick response (QR) codes, which enable fast data access, are a type of 2D barcode.
Android and iOS smartphones use 2D barcodes in their built-in barcode scanners. The user photographs a 2D barcode with their smartphone camera, and the built-in reader interprets the encoded URL, leading the user directly to the relevant website.
A single 2D barcode can hold a significant amount of information in a small space. This information is revealed to the retailer, supplier or customer when the code is scanned by 2D imaging scanners or vision systems.
Information may include:Producer name，Batch / lot number，Product weight，Use by / best before date，Grower ID，GTIN number，Serial number，Price
1D vs. 2D Barcode Scanners: Key Differences
Choosing the right tool depends on your specific needs. Here is a quick comparison:
- Data Capacity: 1D scanners only read simple ID numbers. 2D scanners read massive amounts of data.
- Scanning Direction: 1D scanners require you to align the laser with the bars. 2D scanners work from any direction.
- Screen Reading: Most 1D laser scanners cannot read digital screens. 2D imagers read screens perfectly.
- Durability of Codes: 2D scanners can often read damaged or poorly printed barcodes.
2D Barcode Scanner Applications in Business
1.Retail Stores
In retail environments, 2D scanners are used for:
·POS checkout
·loyalty membership codes
·mobile payments
·digital coupons
They improve checkout efficiency and reduce waiting time.
2.Supermarkets
For supermarkets, 2D scanners help scan:
·packaged goods
·promotional QR labels
·digital price codes
·self-checkout systems
3.Warehouse and Logistics
In warehouse operations, 2D scanners support:
·inventory management
·parcel tracking
·shelf location scanning
·inbound and outbound control
This improves stock visibility and reduces manual errors.
Selection Guide: How to Choose 2D Scanner?
If you are looking for a barcode scanner for your business, consider these three factors:
·Connection Type: Do you need a wired (USB) scanner for a fixed checkout? Or a wireless (Bluetooth/2.4G) scanner for moving around the warehouse?
·Durability (IP Rating): For dusty warehouses, choose a scanner with a high IP rating (like IP54 or IP65) to resist water and drops.
·Scanning Speed: High-volume retail stores need a scanner with high frames per second for instant decoding.
Mainstream two-dimensional barcode types
There are there main types of 2D barcode scanner symbol:GS1 DataMatrix,QR code,PDF417
GS1 DataMatrix is the most common 2D barcode format. Woolworths is currently using GS1 DataMatrix for its 2D barcodes.
GS1 Datamatrix 2D barcodes are compact symbols made up of square modules. They are popular for marking small items such as fresh produce.
1.Breaking down GS1 DataMatrix
1.Separate parts: the finder pattern used by the scanner to locate the symbol, and the encoded data
2.Even number of rows and columns
3.A light ‘square’ in the upper right-hand corner
4.Can encode variable length data – the symbol size varies according to the amount of data encoded
5.Can encode up to 2335 alphanumeric characters or 3116 numbers (in squareform)
2.QR codes
·QR codes are primarily used for connecting to URL sites and are currently not used for point-of-sale. They are often used for consumer-facing packaging, because they can be read by smartphone cameras.
·Using GS1 Digital Link, QR codes can work as multi-use barcodes that allow both consumer engagement and price lookup, eliminating the need for multiple codes taking up valuable packaging space.
3.PDF417
·PDF417 is a 2D barcode that can store various binary data, including alphanumeric and special characters. It can also store images, signatures and fingerprints. As a result, identity verification, inventory management and transportation services often use them. ·The PDF part of its name comes from the term "portable document file." The "417" part refers to its four bars and spaces arranged inside each pattern, consisting of 17 characters.
How Two-Dimensional Barcodes Function
The operational principle of two-dimensional barcodes centres on a visual pattern recognition process involving encoding and decoding, with the specific procedure outlined below:
Data Encoding Process
2D barcodes store information through specific barcode symbologies—arrangements of black and white modules. Software tools such as QR code generators convert input data—including serial numbers, supply chain information, and web addresses—into distinctive patterns comprising squares, dots, or hexagons.
Different 2D barcode types employ distinct symbologies:
QR codes utilise square grids, Data Matrix codes feature checkerboard patterns, while Aztec codes display concentric circular designs. During encoding, error-correcting codes are incorporated to ensure data can be successfully recovered even if up to 30% of the barcode is damaged.
Data Decoding Process
Decoding is the process of extracting information from a two-dimensional barcode. Scanning devices (such as barcode readers or camera-equipped mobile phones) first capture an image of the QR code. Subsequently, the scanner's software analyses the contrast between black and white modules to identify the corresponding barcode symbology. Finally, the pattern is decoded into human-readable data, such as product details, serial numbers, and supply chain information. This decoded data is then transmitted to relevant systems (such as point-of-sale systems or inventory management software) for further processing.
Enterprise Applications: Unlocking Supply Chain Value Beyond Scanning
For enterprise clients, adopting two-dimensional barcodes represents not merely a technological upgrade but a strategic investment, revealing value potential unattainable through traditional one-dimensional codes.
Achieving Full-Chain Product Traceability and Transparency
- From source to shelf: Consolidate critical information—such as producer name, batch number, production date, and expiry date—within a single DataMatrix code.
- Instant Traceability: During quality incidents, swiftly scan codes to trace specific batches, enabling precise recalls that minimise losses and brand risk.
- Compliance Assurance: Meet increasingly stringent traceability regulations in sectors like food and pharmaceuticals.
Optimising Inventory and Warehouse Management
- Rich Information Carrier: During stock receipt, capture more than just product codes—scan to log supplier details, receipt times, and storage locations for granular management.
- Enhanced Inventory Efficiency: Utilise mobile terminals for rapid scanning, updating stock quantities and locations in real-time to minimise discrepancies.
- Serialised Management: Assign unique serial numbers to each high-value item, encoded as two-dimensional barcodes, enabling individual item tracking and strengthening anti-counterfeiting and anti-theft capabilities.
Enhancing Consumer Engagement and Trust
- One-Tap Access: Consumers scan packaging QR codes to instantly access product narratives, authenticity verification, nutritional details, recipes, and promotional offers.
- Brand Building: Convey a transparent and innovative brand image to cultivate consumer trust.
If you have any interest or query during the selection or use of any pos , please Click the link below send your inquiry to our official mail (admin@minj.cn) directly! MINJCODE is committed to the research and development of pos technology and application equipment, our company has 14 years of industry experience in the professional fields, and has been highly recognized by the majority of customers!
FAQ About 2D Barcodes
1. Can all mobile phones scan every type of 2D barcode directly?
Most modern smartphones (both iOS and Android) have built-in camera apps capable of scanning common 2D barcodes, such as QR codes and Data Matrix codes. However, some more specialized codes, like Aztec codes, might need dedicated scanning applications. Generally, the primary types of barcodes used in everyday business situations support direct scanning.
2. Is it possible to use 2D barcodes alongside 1D barcodes?
Absolutely. Businesses can combine both types according to their needs. One-dimensional barcodes are suitable for basic pricing or inventory checks, while 2D barcodes can hold more detailed information, such as serial numbers or supply chain details. For example, a retail product might feature both a UPC barcode (1D) and a QR code (2D) to improve checkout speed and enhance customer engagement.
3. Do I need to pay to generate 2D barcodes?
Many basic tools, like online QR code generators, are typically free and sufficient for small businesses or simple data encoding tasks. However, enterprise-level solutions—such as bulk generation of GS1-compliant barcodes or customized formats—may require purchasing specialized software or subscribing to a service to ensure compliance and efficiency in bulk processing.
4. How do 2D barcodes facilitate global tracking in the supply chain?
Utilizing GS1 standardized 2D barcodes (like GS1 DataMatrix), companies can encode universally recognized product identifiers (GTINs), serial numbers, and batch numbers. Different organizations across various countries and supply chain stages can use GS1-compatible scanning equipment and decoding applications to read these codes, enabling complete tracking from manufacturing to the end consumer.
5. What measures can I take to prevent tampering with 2D barcodes?
To enhance security, consider implementing encrypted encoding (such as digital signatures), employing specific barcode standards, and regularly updating barcode data. Additionally, using high-quality printing materials and incorporating anti-counterfeiting features can help mitigate the risk of barcode forgery or tampering, especially in sectors like pharmaceuticals or premium consumer goods where traceability is crucial.
MINJCODE has supplied barcode scanning equipment to retailers and warehouses for over 15 years. We offer handheld, presentation, and rugged 2D scanners that work with your existing systems.
Phone: +86 07523251993
E-mail: admin@minj.cn
Official website: https://www.minjcode.com/
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Post time: May-10-2023