Barcode (1D/2D) and QR code readers: how to choose for your store and warehouse.
1) 1D vs 2D: The decision that defines the future of your setup
1D codes are linear (e.g., EAN/UPC). 2D codes include QR codes and Data Matrix codes. Zebra explains this division and the concept of 1D vs. 2D in basic FAQs.
Honeywell is straightforward about the point that matters most to buyers: laser scanners and linear imagers tend to read only 1D , while 2D imagers (camera type) read both 1D and 2D (QR, Data Matrix, etc.).
Recommendation “without regrets” (Portugal, 2026):
If you're building a system from scratch, a 2D imager is usually the best bet — because QR codes are everywhere (payments, links, returns, logistics).
2) Types of scanners: laser, linear imager, 2D imager
-
Laser : Fast for 1D, but limited to 1D.
-
Linear imager : also 1D, "takes a picture" of the code; may handle lower quality printed code better in some scenarios (depends on the model).
-
2D imager (area imager) : reads 1D+2D, in various orientations, and frequently reads codes on the screen (mobile phone).
3) Symbols you will most often encounter (retail and logistics)
In consumer products, the most common is EAN/GTIN (barcode associated with the GTIN). GS1 Portugal describes GTIN types (e.g., GTIN-8/EAN-8, GTIN-14/ITF-14 for shipping) and the logic of assignment/use in points of sale and logistics.
In practice, it's confirmed by scanning:
-
EAN-13 / EAN-8 (retail)
-
Code 128 (widely used in logistics)
-
QR Code / Data Matrix (for 2D)
4) Connections: USB, Bluetooth, base, "keyboard mode"
For stores and PCs, many USB scanners function as keyboards (you scan the code and it "writes" it into the software field). For warehouse and mobile applications, Bluetooth-based scanners can be more practical.
Choose this:
-
Fixed box: USB + base (simplicity)
-
Picking/warehouse: Bluetooth (mobility)
-
Counter with screens/telephones: 2D imager (on-screen reading)
5) Ergonomics and reliability (what determines day-to-day use)
-
Comfortable trigger (if you're reading hundreds of things a day)
-
Omnidirectional reading (no need to "align" the code)
-
Tolerance for damaged codes (very relevant in logistics)
If the goal is to speed up operation, the scanner has to "grab" the code without trial and error — this is where 2D imagers usually shine.
6) Purchase checklist (scanner)
-
Do you need a QR/Data Matrix? → purchase 2D imager
-
Will you see EAN/GTIN (retail) and GTIN-14/shipping?
-
USB (speaker) or Bluetooth (mobile)
-
Charging base (if Bluetooth)
-
Comfort/robustness (falls, work pace)
FAQ
Can a 1D reader read QR codes?
Normally not. Laser and many linear imagers operate in 1D; for QR, choose a 2D imager.
What is GS1/GTIN and why am I interested in it?
It is the identification system used in product and logistics barcodes (GTIN-8/13/14, etc.), with guidance and assignment by GS1 (including GS1 Portugal).