Talk:QR code

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On 2 June 2010, QR code was linked from Slashdot, a high-traffic website. (Traffic)

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Text and/or other creative content from this version of QR code was copied or moved into Data Matrix with this edit. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists.

ISO/IEC 23941:2022 Information technology — Automatic identification and data capture techniques — Rectangular Micro QR Code (rMQR) bar code symbology specification =

This page has a link to this standard https://www.iso.org/standard/77404.html for rMQR barcode which looks to be a rectangular QR code like IQR so it might be the same thing... Does that mean that this barcode is now actually free to implement and use? If so then this statement needs to be adjusted

> IQR Codes have not yet been given an ISO/IEC specification, and only proprietary Denso Wave products can create or read IQR codes.

--Mofosyne (talk) 02:34, 4 July 2023 (UTC)[reply]

Possibly a hidden Ad Campaign?

Note that reference 50 leads to http://vitreoqr.com/2014/QR_Code.html a company that CLEARLY is selling QR Codes. We should also note that everyone CAN download the iQR generator from Denso-Wave's website after registering (free): http://www.denso-wave.com/en/adcd/product/software/building/qrdraw-ad.html IMHO, this reference should be changed or removed. I'd put this as the reference instead: http://www.qrcode.com/en/codes/iqr.html — Preceding unsigned comment added by 188.250.154.18 (talk • contribs) 16:32, 4 July 2014

JAB code

It seemed to be a stretch to call JAB code a variant, so I moved the whole section to its own page. ~ MD Otley (talk) 01:42, 9 February 2023 (UTC)[reply]

Incorrect codes for the masks

I may misunderstand but the image "QR Format Information.svg" appears to show the wrong codes for the mask patterns. The ISO IEC 18004 2015 Standard (the first I managed to find) has them in an entirely different order. MatthewGAllan (talk) 03:03, 28 January 2024 (UTC)[reply]

utf-8

Modern QRcode can also transport utf-8, it is not mentioned in this article. 2A01:CB0C:593:A300:5A0F:89A1:C8DE:6369 (talk) 15:57, 22 November 2024 (UTC)[reply]

Semi-protected edit request on 20 December 2024

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Please change Querini et al. (2014) to Querini et al. (2011). The reference cited is from 2011. 152.117.253.98 (talk) 23:18, 20 December 2024 (UTC)[reply]

Done LizardJr8 (talk) 23:58, 20 December 2024 (UTC)[reply]

Semi-protected edit request on 7 January 2025

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change "A QR code (quick-response code)[1] is a type of two-dimensional matrix barcode, invented in 1994, by Japanese company Denso Wave for labelling automobile parts.[2][3] It features black squares on a white background with fiducial markers, readable by imaging devices like cameras, and processed using Reed–Solomon error correction until the image can be appropriately interpreted. The required data is then extracted from patterns that are present in both the horizontal and the vertical components of the QR image.[4]

Whereas a barcode is a machine-readable optical image that contains information specific to the labeled item, the QR code contains the data for a locator, an identifier, and web-tracking. To store data efficiently, QR codes use four standardized modes of encoding:

(1) numeric, (2) alphanumeric, (3) byte or binary, and (4) kanji.[5] Compared to standard UPC barcodes, the QR labeling system was applied beyond the automobile industry because of faster reading of the optical image and greater data-storage capacity in applications such as product tracking, item identification, time tracking, document management, and general marketing.[4]"

by

" A QR code (quick-response code)[1] is a type of two-dimensional matrix barcode, invented in 1994, by Japanese company Denso Wave for labelling automobile parts.[2][3] It features black squares on a white background with fiducial markers, readable by imaging devices like cameras, and processed using Reed–Solomon error correction until the image can be appropriately interpreted. The required data is then extracted from patterns that are present in both the horizontal and the vertical components of the QR image.[4]

The QR code was invented in 1994 by Masahiro Hara, an engineer at Denso-Wave, to improve the traceability of parts in Toyota factories. Its fast scanning speed and robustness against damage, such as oil stains, made it an ideal solution for production lines. Released under a free license as early as 1999, the QR code was adopted in a wide variety of fields, far beyond the automotive industry.

Whereas a barcode is a machine-readable optical image that contains information specific to the labeled item, the QR code contains the data for a locator, an identifier, and web-tracking. To store data efficiently, QR codes use four standardized modes of encoding:

(1) numeric, (2) alphanumeric, (3) byte or binary, and (4) kanji.[5] Compared to standard UPC barcodes, the QR labeling system was applied beyond the automobile industry because of faster reading of the optical image and greater data-storage capacity in applications such as product tracking, item identification, time tracking, document management, and general marketing.[4] Qargo (talk) 13:10, 7 January 2025 (UTC)[reply]

Not done for now: The added paragraph overlaps with the above paragraph. It would be better to write one cohesive paragraph instead of two (or rewrite the two to avoid overlapping information). Ultraodan (talk) 14:40, 7 January 2025 (UTC)[reply]