Barcodes: Difference between revisions

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Latest revision as of 10:20, 7 August 2024

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Barcode length

The majority of product codes are following EAN-13 standard, and, as such, are 13 chars length.

As of 2022-04-06, Open Food Facts contains more than 12,000 products (~0.5%) with a barcode longer than 13 chars.

The majority of barcodes with 20 numbers are products prepared, packaged and sold by Bonarea (cheese, meat, fruits, etc.); eg. https://world.openfoodfacts.org/cgi/search.pl?search_terms=Queso+de+mezcla+semicirado&search_simple=1&action=process&json=1; these barcodes are true barcodes and not a data issue, as can be seen on this picture.
- They are beginning with 00.
- Price seems to be included in the barcode: in 00162403200322003538, the price, €3.53, is included just before the last digit.
- ~7500+ products
20+ are beginning with 0105400141
In poor light conditions, barcode scanners may sometimes misread barcode numbers & record it wrongly. After scanning, verify if barcode on package & what's scanned are matching.
[to be completed]

Open Food Facts website can't display a product with a barcode longer than 24 chars (a bug is open).

Barcode weight

For EAN-13 barcodes, GS1 recommend barcodes' weight to be ~32mm. In general, producers tend to use barcodes between 24 and 35 mm. Values below 24mm and above 35 are rare.

Testing barcodes with our apps

It's interesting to control that our apps are playing well with different barcodes' size. We build a test document that you can print and use with the app.

All things barcode

Non Standard Barcodes
Brands to add based on barcode
Global brands and companies taxonomy: Barcode prefixes for brands are already included
Global countries taxonomy : Barcode prefixes for countries will be included
Barcodes/Countries: Map from barcode initials to country or purpose
Verification/Noteworthy Products#Products with same bar code: List of instances where two or more products have been identified as having the same barcode.

Barcode related pages on Open Food Facts

News

Wikidata is adding support for GS1 country prefixes

Roadmap

Features and bugs to work on
Adding APIs for mobile scanning apps
- Get country suggestions
- Get Manufacturer Code suggestions
- Get Product Code suggestions
- Get barcode API
- Generate barcode SVG

@@ Line 1: / Line 1: @@
+{{otherlang
+  | fr=FR:Codes-barres
+}}
+== Barcode length ==
+The '''majority of product codes''' are following EAN-13 standard, and, as such, are '''13 chars length'''.
+As of 2022-04-06, Open Food Facts contains '''more than 12,000 products''' (~0.5%) with a barcode longer than 13 chars.
+* The majority of barcodes with 20 numbers are products prepared, packaged and sold by Bonarea (cheese, meat, fruits, etc.); eg. https://world.openfoodfacts.org/cgi/search.pl?search_terms=Queso+de+mezcla+semicirado&search_simple=1&action=process&json=1; these barcodes are true barcodes and not a data issue, as can be seen on [https://images.openfoodfacts.org/images/products/008/348/031/00320002774/front_es.3.400.jpg this picture].
+** They are beginning with 00.
+** Price seems to be included in the barcode: in [https://world.openfoodfacts.org/product/00162403200322003538/queso-oveja-curado 00162403200322003538], the price, €3.53, is included just before the last digit.
+** ~7500+ products
+* 20+ are beginning with 0105400141
+* In poor light conditions, barcode scanners may sometimes misread barcode numbers & record it wrongly. After scanning, verify if barcode on package & what's scanned are matching.
+* [to be completed]
+Open Food Facts website '''can't display''' a product with a barcode longer than '''24''' chars ([https://github.com/openfoodfacts/openfoodfacts-server/issues/6571 a bug is open]).
+== Barcode weight ==
+For EAN-13 barcodes, GS1 recommend barcodes' weight to be ~32mm. In general, producers tend to use barcodes between 24 and 35 mm. Values below 24mm and above 35 are rare.
+== Testing barcodes with our apps ==
+It's interesting to control that our apps are playing well with different barcodes' size. We build a [https://docs.google.com/document/d/12VtFOsnHfK4PVwBJy_aHwSogX_yKRNfzoiHCPD1sxN0/edit# test document] that you can print and use with the app.
 == All things barcode ==
 * [[Barcodes/Non Standard Barcodes|Non Standard Barcodes]]
@@ Line 4: / Line 29: @@
 * [[Global brands and companies taxonomy]]: Barcode prefixes for brands are already included
 * [[Global countries taxonomy|Global countries taxonomy]] : Barcode prefixes for countries will be included
+* [[Barcodes/Countries]]: Map from barcode initials to country or purpose
+* [[Verification/Noteworthy Products#Products with same bar code]]: List of instances where two or more products have been identified as having the same barcode.
+== Barcode related pages on Open Food Facts ==
+*  http://world.openfoodfacts.org/code/invalid-ean
+*  http://world.openfoodfacts.org/codes
+*  http://world.openfoodfacts.org/code/9300462xxxxxx
+== News ==
+* Wikidata is adding support for GS1 country prefixes
 == Roadmap ==
+* [https://github.com/openfoodfacts/openfoodfacts-server/issues?utf8=%E2%9C%93&q=is%3Aissue%20is%3Aopen%20barcode Features and bugs to work on]
+* Adding APIs for mobile scanning apps
+** Get country suggestions
+** Get Manufacturer Code suggestions
+** Get Product Code suggestions
+** Get barcode API
+** Generate barcode SVG
+== See also ==
+* [https://en.wikipedia.org/wiki/Barcode Barcode] Wikipedia page.
-[https://github.com/openfoodfacts/openfoodfacts-server/issues?utf8=%E2%9C%93&q=is%3Aissue%20is%3Aopen%20barcode Features and bugs to work on]
+[[Category:Barcodes]]
+[[Category:Fields]]