1001 Freelance Projects -- Reverse engineer check digit algorithm for barcode formula

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Project title:	Reverse engineer check digit algorithm for barcode formula
Posted by:	External project from PeoplePerHour
Started:	23-Apr-2025 05:23 GMT
Description:	Expected duration: less than 1 week I am looking for a highly capable freelancer to reverse engineer the check digit algorithm in a barcode formula. I will provide full details via PPH messages, however please be informed that me and my team have been stuck on this problem for a few weeks - it is not a simple solution following any traditional check digit alg such as UPC or EAN. It's possible the alg used is inspired by UPC/EAN, so I would like to work with someone with experience in check digit calculation and/or barcodes. I have a list of barcodes which work (i.e. have the correct check digit), however currently the only method to find the correct check digit is to test 0-9 manually which won't work long-term. Again, I will provide details if you are suited to the project. If a solution is found it can be delivered via code in any language or as pseudocode. Python is preferred. -- The proposed approach: I send full details of the formula including working examples The freelancer messages me if they find a solution I send the freelancer a few barcodes to apply their alg to and they respond with the check digit I test the barcode with the check digit to confirm it works I pay the freelancer The freelancer delivers the algorithm
Project ID:	3430422
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