Data Matrix Scanner
Read Data Matrix — the small square 2D code marked on electronics, medicines and machined parts.
Scan a code with your camera, drop in an image, or paste one with Ctrl + V.
How to use the Data Matrix Scanner
- Point your camera at the code, drop in a photo, or paste one with Ctrl + V.
- Data Matrix codes are small — move close so the code fills a good part of the frame.
- The contents are decoded and broken into fields where the format is recognised.
About the Data Matrix Scanner
Data Matrix is the 2D code you find where there is almost no room for one: etched on a circuit board, laser-marked on a surgical instrument, printed on a blister pack of medicine. It packs a surprising amount into a few millimetres square, and its error correction is aggressive enough that a code can be scratched, partly obscured or marked on a curved surface and still read.
Two features explain its industrial popularity. The L-shaped finder pattern along two edges lets a scanner work out the code's orientation from any angle, so a part can be presented any way up. And the Reed-Solomon error correction can reconstruct the data with a substantial portion of the code damaged — which is what allows direct part marking, where the code is engraved into metal rather than printed on a clean label.
In pharmaceuticals you will meet it as GS1 DataMatrix, which carries a product number, a batch, an expiry date and a serial number in one small square. That combination is what makes falsified-medicine regulations enforceable: each pack is individually identifiable, not just its product line.
Read one with your camera, an image or a paste. Everything decodes locally. For the code most people meet day to day see the QR code scanner.
Frequently asked questions
How is Data Matrix different from a QR code?
It is denser at small sizes and uses an L-shaped finder pattern rather than three corner squares, which suits tiny marks on parts. QR is better for codes people scan with a phone at a distance.
Why is it used on medicines?
GS1 DataMatrix carries product, batch, expiry and serial number in one small square, which lets each individual pack be identified — the basis of falsified-medicine rules.
Can it be read if it is damaged?
Often yes. Reed-Solomon error correction can reconstruct the data with a meaningful portion of the code missing, which is why it works for codes engraved directly into metal.
Why will my phone camera not read one?
Usually distance. These codes are physically tiny, so unless you get close enough for the code to occupy a good share of the frame there are too few pixels per module to decode.