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
Gujarati Real Estate Reels Editor Category: Adobe Premiere Pro, After Effects, Animation, Video Ads, Video Editing, Video Production, Video Services Budget: ₹600 - ₹1500 INR
17-Aug-2025 16:03 GMT
Simple Non-Profit Website Build Category: CMS, Graphic Design, HTML, PHP, Squarespace, Web Design, Web Development Budget: $15 - $25 USD
Influencer Reels Video Editor Category: A / V Editing, Adobe Premiere Pro, After Effects, Animation, Video Editing, Video Services Budget: $40 - $500 USD
Amazon Listings Specialist Needed Category: Amazon, Amazon Listings Optimization, Amazon Product Launch, Amazon Web Services, Internet Marketing, Marketing, Product Management, SEO Budget: $30 - $250 USD
17-Aug-2025 15:59 GMT
Google Forms Survey Programming Category: Data Collection, Design Thinking, Google Analytics, HTML, JavaScript, MySQL, Piping, Usability Testing, XML Budget: $250 - $750 USD
Urgent R Statistical Modeling Assistance Category: Data Analysis, Data Modeling, Data Visualization, R Programming Language, SPSS Statistics, Statistical Analysis, Statistics, Time Series Analysis Budget: $8 - $15 AUD
17-Aug-2025 15:51 GMT
App logo like play store Category: Advertising, Branding, Business Card Design, Canva, Creative Design, Design, Graphic Design, Logo Design, Photoshop, Print Design Budget: ₹750 - ₹1250 INR
17-Aug-2025 15:50 GMT
In-Person Medical Interpreter Needed Category: English (US) Translator, Japanese Translator, Medical Translation, Translation Budget: $250 - $750 USD
