Barcode Verification

Barcode Verification

Barcode Verification is a test that determines the quality of a printed barcode on a product’s packaging.  A barcode verifier machine is used to scan the printed barcode several times at varying angles and gives an ISO grade (4 – 0 / A – F) on a Barcode Verification Report.  The lower the resulting grade the more likely the barcode will have scanning difficulties.   Having an acceptable verification report is often a prerequisite to supplying larger retailers.  Major retailers typically require printed barcodes to have an ISO grade of 1.5 or higher.Barcode Verification reports can also indicate what needs to be done to improve barcode quality.  Common causes for failed barcode verification include:

– Removal or reduction of the quiet zones (the white space either side of the code)
– Truncating the code e.g. significantly reducing the height of the barcode
– Incorrect colour combination (black bars on white background is ideal)
– Poor print resolution
– Excessive print bleed
– Incorrect check digit or non standard encoding e.g. an incorrect format
– Barcode is placed over a corner, obscured by shrink wrap or printed on an uneven surface rendering it unreadable

The EAN-13 and UPC-A barcode images we supply will pass a verification report given they are printed correctly (within 80% – 200% magnification) and not adversely altered at the graphic design stage.

Where to obtain a Barcode Verification Report

GS1 UK offers Barcode verification reports to non-members. This means you can get a barcode verification report from GS1 even if you have purchased your barcodes with a re-seller such as Barcode Bird. Verification reports can also be sourced outside of GS1 meeting industry standards. Currently the only UK retailer we are aware of that requires barcode verification reports is ASDA. Some overseas retailers require verification reports as vendor policy.  Please see our global barcode acceptance page for further information.

Note: When using our barcodes a verification report from GS1 UK will show “N/A” or similar in the “GS1 Company Prefix” section. This simply means that you have not obtained the barcode directly from GS1 UK as you have purchased through a barcode re-seller.  The quality of the barcode itself is not affected by this detail.