Talk:QR code

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Technology

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

All prior and subsequent edits to the article are noted in its revision history.

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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.

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

→ The vitreoqr.com domain is inactive. I believe the link should be removed and changed. Internetyev (talk) 18:36, 31 January 2025 (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]

Semi-protected edit request on 25 March 2025

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Add a new bullet point to the "Standards" section to reflect a new version of the ISO/IEC 18004 standard released in 2024:

August 2024 - ISO/IEC 18004:2024 Information technology — Automatic identification and data capture techniques — QR code bar code symbology specification Optimizes encoding efficiency, improves error correction, and refines structured append functionality.

Note: The description above was generated using AI analysis to compare the two versions of the standard.

Source: https://www.iso.org/standard/83389.html Gibberbyte (talk) 09:02, 25 March 2025 (UTC)[reply]

Done LizardJr8 (talk) 23:51, 1 April 2025 (UTC)[reply]

Suggestion for External Links Section

Hello!

I’d like to suggest adding a new link to the "External links" section of this article. The website provides a free and easy-to-use tool for generating QR codes specifically for payments (e.g. PayPal, Cash App, Venmo), which could be useful for readers interested in applying QR codes in real-world payment contexts.

Proposed link: QR Code Generator for Payment – OnlineQRCode.com

It’s a free, no-registration-needed generator focused on mobile payment applications. Thanks for considering! Claudialopra (talk 10:57, 1 April 2025 (UTC)[reply]

The article would not benefit from promoting this business, and that's all a link like this would be doing. The specific URL you added provides QR coes that embed a tracker into their generated codes by default and as far as I can tell when trying does indeed require signing up. The root domain itself (which you did not link to) provides the ability to create a simple QR code, but also appears to require signing up to download them. Promotional links like this have no place on this or any other Wikipedia article. - Aoidh (talk) 16:14, 1 April 2025 (UTC)[reply]