Code 39

Rarity: Common

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At a glance

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Notion

Domain

Science and technology

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What Wikipedia says

Code 39 (also known as Alpha39, Code 3 of 9, Code 3/9, Type 39, USS Code 39, or USD-3) is a variable length, discrete barcode symbology defined in ISO/IEC 16388:2023.

Excerpt from the Wikipedia article “Code 39”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Havarhen, Public domain, via Wikimedia Commons.