The knitwear industry moves fast — and who knows that better than production managers like you? With hundreds of buyer orders moving through knitting, linking, and finishing, every minute counts. But manual SFG tracking is slowing down the entire operation.
You’ve probably seen how easily bundles get misplaced or miscounted between departments. That’s why many factories are now adopting digital tracking solutions like QR codes and RFID. QR labels or RFID tags are attached to panels and linked to worker IDs. As bundles move through the floor, readers at checkpoints automatically record each transfer, giving real-time visibility to every stage.
Now comes the golden question: Which works better for SFG tracking in knitwear — QR codes or RFID tags? Our blog is here to provide you with details of both technologies while also recommending you the one which is worth the investment.
Let’s start with understanding RFID and QR code in the simplest way.
What is RFID?
RFID (Radio Frequency Identification) is a wireless technology that uses radio waves to automatically identify and track tagged items without requiring direct visual contact.
Did you know?
The global RFID market size is expected to grow from USD 12.61 billion in 2025 to USD 25.24 billion in 2033 at a CAGR of 9.1% during the forecast period (RIFD Market).
Components of RFID
- RFID Tag (or Transponder): A small chip attached to items that stores product information. These tags hold over 41.4% of the RFID market (Global Market Insights).
- RFID Reader (or Interrogator): It sends and receives radio signals to read or write data on RFID tags. You can find hand-held and fixed readers.
- RFID Antenna: It emits radio frequency signals to power the tags and capture their responses for the reader.
- RFID Software: It bridges between RFID hardware and business systems.
- Backend Database / IT System: RFID data is recorded, analyzed, and linked to production, inventory, or logistics operations.
What is a QR Code?
A QR (Quick Response) Code is a 2D barcode that stores small chunks of data such as product codes, lot numbers, or operator IDs. When scanned, it reveals the stored data almost instantly.
Fun Fact: Using QR codes for inventory makes logistics operations smoother and up to 30% more efficient (QR Code chimp).
Both RFID and QR codes are crucial aspects of digital transformation in the knitwear manufacturing industry. However, both have their own pros and cons. Let’s now dive into the details of the differences they hold.
8 Core Differences Between RFID and QR Code
Here is the detailed description of the eight major distinctions between RFID and QR code.
1. Hardware used
An RFID setup consists of tags, readers, antennas, and middleware software, forming a complete data-capture ecosystem. RFID tags come in varied sizes, from thin adhesive labels for garment bundles to rugged hard tags for crates or metallic trolleys. However, these lightweight tags require strategic placement across entry and transfer points to ensure coverage.
For a QR setup, only a few key components — printed QR labels, scanners, and basic software are required. While setup is inexpensive, maintaining clear and readable codes across production stages can be error-prone in busy knitwear environments.
2. Line of sight
RFID tags can be detected without direct visual contact, even when buried inside cartons, fabric rolls, or stacked trays. Passive RFID can read tags from a few centimeters up to 10-12 meters or more. At the same time, active RFID tags extend this range to 100 meters.
QR codes, on the other hand, require direct visual contact and line of sight for scanning. QR codes on small surfaces are readable within a few centimeters to about a meter, while larger codes extend the range but require proportionally bigger prints.
3. Data capacity
RFID tags can store a good volume of data on batch details, operator IDs, and production timestamps. Passive RFID tags typically store around 96 to 128 bits of data, while higher-end/active versions can hold several kilobytes. These data points can be updated or rewritten as the item moves through each manufacturing stage, building a live digital history for every SFG unit.
A QR code stores limited static data of about 3,000 to 4,000 characters, which are typically a numeric or alphanumeric ID. Interestingly, a typical production QR code can hold a few dozen characters. Once printed, the information cannot be modified. Any update like status change or reallocation, requires reprinting a new code, which slows data accuracy and inflates administrative work.
4. Speed & scalability
RFID readers can scan up to hundreds (600–1,000) of tags per second. It is ideal for high-volume scanning in knitwear manufacturing factories where bundles move quickly between operations. Such prompt and high-scale scanning reduces waiting time at production checkpoints and accelerates movement between knitting, linking, and finishing lines.
QR scanning is proximity-dependent and can scan only one at a time. Further, it often takes several seconds for one scan. As SFG volume grows, so does the time required to scan, verify, and record entries. Such a scenario creates bottlenecks that hinder real-time production visibility and contribute to the hidden cost of inefficiency through idle time and manual rework.
5. Durability
RFID tags are typically made with durable materials like plastic, epoxy, or sometimes metal, and can be embedded inside products or packaging. Tags like laundry tags can withstand industrial wear and tear caused by water, dirt, chemicals, and extreme temperatures. They can last up to a decade and be reused for 200–300 plus commercial wash cycles.
The QR labels for SFG tracking are printed on paper or labels on surfaces. Thus, they are vulnerable to scratches, dirt, fading from sunlight, humidity, and physical damage. Damaged or worn QR codes may become unreadable, forcing frequent replacements. Moreover, repeated or stage-wise QR printing doesn’t support sustainability.
6. Automation
RFID automates tracking by capturing bundle data instantly as it passes through fixed readers. It can update data on the ERP used in the knitting factory. Some advanced setups also include sensors that trigger alerts if conditions like movement or temperature go beyond set limits.
Unlike RFID, QR relies entirely on manual scanning and human discipline. Any missed scan or delay can create data gaps and inaccuracies in production records, making it harder to trace delays or discrepancies later.
7. Security
Users can enable encryption and password protection on RFIDs to safeguard data from tampering or duplication. Each tag carries a unique ID, making it traceable and harder to forge. This serves as a strong defense against worker fraud or unauthorized substitution.
Compared to RFID, QR codes offer little built-in security for WIP tracking. However, it doesn’t make them completely secure. In fact, they’re simple printed labels; anyone can easily copy or reprint them and place them on another bundle. Since QR codes are easy to copy or reprint, they can be mistakenly or intentionally misplaced, leading to data inconsistencies
8. Cost
In small or mid-sized factories, RFID implementation usually ranges between $5,000 and $25,000, while in larger operations with complex supply chains, the cost can rise to around $250,000. This cost typically includes:
- Number of RFID components used
- Software licenses
- Installation and integration
- Training and support
When it comes to QR codes, the cost is comparatively cheaper. You can generate QR code online, print it, and then use it as needed. However, to scan the QR, you need a scanner, which can cost from $10 to $300.
RFID or QR: Which technology is better for SFG tracking in the knitwear industry?
The knitwear industry runs on speed and precision — hundreds of orders from different buyers move through the factory at once. In such a fast-paced environment, losing even a few minutes per process means losing money and risking delayed deliveries.
With QR codes, every SFG must be scanned one by one, often taking several seconds per item. When multiplied across thousands of pieces, it becomes a bottleneck that drains time and labor. In contrast, RFID can read up to 1000 items per second, saving ample time.
Also, RFID tags remain intact and functional for years. They can withstand the rigors of production, be reused across multiple cycles, and drastically reduce the waste and reprinting costs associated with disposable QR labels. Though RFID requires higher upfront spending, its operational returns justify the cost.
Final Thoughts
When in doubt whether to adopt RFID or QR in your knitting manufacturing, you need to consider the speed and efficiency.
While QR codes offer a practical entry point for basic tracking, RFID delivers deeper value through automation, durability, and real-time data flow across production stages. Compared to QR, the investment in RFID is high; however, it gives back the value with improved productivity, transparency, and operational control.
Acknowledging the benefits of RFID, KnitOne — a tailored ERP for knitwear manufacturers— is now transitioning its SFG tracking from QR-based to RFID. With this move, KnitOne’s aims to make the SFG tracking ecosystem more robust and efficient for its users.
Why wait when you can boost profits with KnitOne’s complete operational visibility!
Frequently Asked Questions
Are RFID scanners and Barcode scanners the same?
No, they’re not the same. A barcode scanner reads printed visual codes one at a time using light, while an RFID scanner uses radio waves to read multiple tagged items instantly.
Can RFID and QR systems be used together in knitwear production?
Yes. The hybrid model of QR codes for low-value, short-cycle processes and RFID for long-term tracking of multi-stage items can be adopted. But RFID alone can bring better results.
Do RFID tags need a power source to work?
Not exactly, but the passive RFID tags draw energy from the RFID reader’s radio waves.
Do RFID tags require internet connectivity to function?
Not always. RFID readers can operate offline.
What happens if an RFID tag gets damaged or lost?
A damaged tag can’t be read, and a lost one makes the item temporarily untraceable until it’s retagged.
