This makes it possible to encode EAN / GTIN-13 numbers into an ITF-14 code simply by left-padding them with "0", see next section. Per convention, if the first digit of the GTIN-14 is "0", only the contained thirteen digit EAN / GTIN-13 number will be read and transmitted. The actual meaning of the packaging level is not standardized and depends on the context staying with the boxes-of-cans example, level 1 may denote 12 cans per box while level 2 denotes 24 cans. The first digit of the GTIN-14 describes the packaging level which can be any number between 1 and 8. As such they are not meant to be read at the point-of-sale or checkout but rather during transport, in receiving and in the warehouse. IFT-14 barcodes are used to designate packaging levels of individual products such as boxes of 12 cans or boxes of 24 cans. The top and bottom bars of an ITF-14 barcode prevent this short scanning. In some situations (for example when scanning from an angle) the scanner might stop scanning in the middle of a symbol if it detects a white space after the pattern of the stop character this is called a "short scan": In this image the stop character (wide bar, narrow space, narrow bar) is marked in red, note the same pattern within the symbol (blue): The underlying Code 2/5 Interleaved symbology suffers from a major design flaw: The bar / space pattern of the stop character can also occur within a symbol. ITF-14 with top and bottom bars or without bars are used when printing on adhesive labels. The "framed" style (#3) is used when the code is printed on carton, corrugated cardboard or similar materials. The sample show the variants of ITF-14 barcodes: Without frame, bearer bars above and below, frame around the code: when scanning the barcode from longer distances or on high-bay shelves) larger dimensions or, alternatively, long-range barcode scanners may be required. Such a code can be reliably scanned with standard barcode laser scanners from a distance of up to 0.5-1m (max. Wide / narrow ratio: 2.25 - 3.00, typical 2.5īased on those recommendations, an ITF-14 barcode symbol with bearer frame is roughly 150mm (6") wide and 35mm (1.35") tall, making it far bigger than for example an EAN 13 barcode.GS1 recommends the following settings for ITF-14: The frame has a defined thickness of 4.83mm (0.190"), independent of the selected module width and -height. A so called bearer bar or frame can be put around the code. Shorter GTIN-13 (EAN 13 numbers) and GTIN-12 (UPC-A numbers) can be encoded by prepending the data with zeroes, see below. ITF is short for Interleaved Two of Five, hence the name ITF-14. ITF-14 is an application of Code 2/5 Interleaved that encodes a 14-digit GTIN (for Global Trade Item Number).
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