The useful idea
- The useful idea
A QR code, short for quick-response code, is a type of two-dimensional matrix barcode invented in 1994 by Masahiro Hara of the Japanese company Denso Wave for labelling automobile parts.
- How it works
It features white and black squares within a square grid featuring fiducial markers on the corners, readable by imaging devices like cameras, and processed using Reed–Solomon error correction until the
- Why it matters
image can be appropriately interpreted.
Why this matters
Use QR code as a lens when judging what a digital tool can — and cannot — do.
Try this
Use QR code as a lens when judging what a digital tool can — and cannot — do.
Test your recall
Which idea belongs to the explanation of QR code?
- Why it matters
- How it works
- The useful idea — correct
A QR code, short for quick-response code, is a type of two-dimensional matrix barcode invented in 1994 by Masahiro Hara of the Japanese company Denso Wave for labelling automobile parts.