Most barcode scanners can read QR codes, but not all of them
A standard barcode scanner—the kind that reads the vertical black lines on product packages—can read a QR code if it has the right decoder software built in. Many modern scanners do. But older scanners and some cheaper models are programmed to read only one-dimensional barcodes (the straight lines), not two-dimensional codes like QR codes (the squares with dots). Before you assume your scanner will work, you need to check what formats it actually supports.
The difference comes down to the scanner's hardware and firmware. A barcode scanner is really a camera that captures an image and software that decodes what it sees. If the software only knows how to decode UPC codes or Code 128, it will not recognize a QR code even if the camera can see it clearly. If the software includes a QR decoder, the same scanner will read both types without any problem.
Key Takeaways
- Modern barcode scanners often include QR code reading as a standard feature, but you must check your scanner's specifications to be sure.
- Older laser scanners and budget models typically read only one-dimensional barcodes and cannot decode QR codes without a firmware update.
- You can test whether your scanner reads QR codes by pointing it at one and seeing whether it produces output.
- If your scanner cannot read QR codes, you may be able to update the firmware, buy a new scanner, or use a smartphone camera instead.
How barcode scanners and QR codes work differently
A one-dimensional barcode (like the UPC code on a grocery item) encodes information in the width and spacing of vertical lines. A laser or camera reads left to right, counts the bars, and decodes the pattern. This is fast and reliable for a single piece of data—usually a product number.
A QR code encodes information in a two-dimensional grid of black and white squares. A scanner has to read the entire grid, find the position markers in the corners, and decode the pattern in both directions. QR codes can hold much more data—a URL, contact information, or a long string of text—but they require more processing power to decode.
A barcode scanner with a camera (rather than a laser) can physically capture a QR code image. The question is whether the decoder software recognizes the format. If it does, the scanner will read the code. If it does not, the scanner will either produce no output or display an error.
How to find out what your scanner can read
Check the scanner's user manual or specification sheet. Look for a section called "Supported Formats," "Barcode Types," or "Symbologies." If QR code, QR, or "2D" appears in that list, your scanner can read QR codes. If the list shows only "UPC," "Code 128," "Code 39," or other one-dimensional formats, it cannot.
If you do not have the manual, search the manufacturer's website using your scanner model number. Most manufacturers publish spec sheets as PDF files. If you still cannot find the information, test the scanner yourself: point it at a QR code and see whether it reads it. If nothing happens, your scanner does not support QR codes.
You can also contact the scanner manufacturer's support line with your model number. They can tell you in minutes whether QR reading is available and whether a firmware update might add it.
Updating firmware to add QR code support
Some barcode scanners can be updated to read QR codes through a firmware upgrade. Firmware is the software that lives inside the scanner itself. If your scanner's manufacturer released a newer version that adds QR support, you may be able to read it and install it yourself.
Check the manufacturer's support page for your model and look for "Firmware Updates" or "Downloads." If an update that adds QR support is available, the page will explain how to install it—usually by downloading a file to a computer, connecting the scanner via USB, and running an installation tool. The process takes a few minutes and does not require technical knowledge.
Not all scanners can be updated this way. Older laser scanners, in particular, often cannot be upgraded because their hardware was not designed to process two-dimensional codes. If no update is available for your model, updating is not an option.
When you need a different scanner
If your scanner cannot read QR codes and no firmware update is available, you have two choices: buy a new scanner that supports QR codes, or use a different tool.
Modern barcode scanners—particularly those designed for retail, warehouse, or healthcare use—almost always include QR code support. When you shop for a replacement, confirm that the spec sheet lists QR as a supported format. Scanners that support both one-dimensional and two-dimensional codes are now standard and cost roughly the same as older models.
If you only need to read QR codes occasionally, a smartphone camera is often the simplest solution. Every modern phone can read QR codes through the built-in camera app or a free QR reader app. Point the camera at the code, and the phone displays the URL or information encoded in it. This works when ready and requires no equipment purchase.
Why some businesses still use older scanners
Many businesses keep using barcode scanners that read only one-dimensional codes because they work reliably for the job they do. If a business has been scanning product barcodes for years and has no reason to read QR codes, replacing the scanner is an unnecessary expense.
This changes when a business needs to read QR codes for a new purpose—tracking shipments, managing inventory with QR labels, or reading customer-facing codes. At that point, upgrading to a scanner that handles both formats makes sense. The cost difference between a one-dimensional-only scanner and a two-dimensional scanner is small enough that most businesses choose the more capable model when they buy new equipment.
Testing your scanner with a QR code
If you want to know right now whether your scanner reads QR codes, the fastest way is to test it. Find any QR code—they are everywhere on product packaging, restaurant menus, and websites. Point your scanner at it and press the trigger or button.
If the scanner beeps and displays the code's contents (usually a URL or text), it reads QR codes. If nothing happens, or if the scanner beeps but displays an error, it does not. This test takes 10 seconds and tells you everything you need to know about your specific scanner.
Frequently Asked Questions
Can a laser barcode scanner read QR codes?
Most laser scanners cannot read QR codes because they are designed to read only one-dimensional barcodes. Laser scanners work by bouncing a beam across the barcode and measuring the reflections—a technique that works for lines but not for two-dimensional grids. Camera-based scanners are much more likely to support QR codes.
What if my scanner reads the QR code but shows garbage characters?
This usually means the scanner read the code but the decoder is not configured correctly, or the QR code itself is damaged or poorly printed. Try scanning a different QR code to see if the problem is with the scanner or the specific code. If multiple codes produce garbage, contact the scanner manufacturer for help with decoder settings.
Do I need a special scanner just for QR codes?
No. Any barcode scanner that supports QR codes will also read traditional one-dimensional barcodes. You do not need separate equipment. A single modern scanner handles both formats.
Can I make my old scanner read QR codes without buying a new one?
Only if a firmware update is available from the manufacturer. Check the manufacturer's website for your model number. If no update exists, the scanner's hardware cannot process QR codes, and upgrading is the only option.
Why would I use a barcode scanner instead of my phone to read QR codes?
A barcode scanner is faster if you are reading many codes in a row—you do not have to unlock your phone or open an app each time. Scanners are also more reliable in bright sunlight and can be mounted in fixed positions for hands-free operation. For occasional use, a phone is simpler.