Open Product Identifier (OPI)
Open-source and royalty-free OPI system is designed to solve today's product identification problem
Open, Free, Fast Product Identifier: OPI
We developed OPI specification to solve problem with barcodes.
Barcodes, UPC, GTIN, Global Trade Item Number etc. These are so many and all try to solve a simple problem: Generating a unique identifier for products.
However they fall short of solving this problem. Also they create bureaucracy, cost manufactures a lot of time and money!
We developed Open Product Identified (OPI) based on Internet domain names. This solves many problems.
By design, Internet domain names are unique. By adding a subdomain under a company name, company can create unlimited number of unique subdomains. Thus:
- Self-assigned and managed, no central registration needed.
- Fast. You control it yourself.
- Free. No need to register with somewhere and deal with bureaucracy.
Here are OPIs for our products:



For barcode printing and implementation, OPI value should be encoded in "Code-128" format.
This will produce a barcode that can be read by common barcode readers.
For testing and development, you can encode your OPIs here:
https://barcode.tec-it.com/en/Code128?data=gr-a.gnss.y3t.systems
We develop customized solutions for your needs. We can fully digitalize your business, giving you peace of mind and extra profits. Please contact us for our achievements and consulting.