Preventing duplicated serial numbers is the most critical aspect of our production line. To achieve this, our prepress department strictly implements advanced generation mechanisms like the Snowflake algorithm and UUIDs. Subsequently, every printed batch of sequential overlays is cross-verified using CRC check systems to eliminate any data overlap. Most importantly, we can combine these numerical sequences with physical security features, such as tamper-evident coatings or laser-engraved holograms. As a result, global supply chain administrators gain access to a truly non-reproducible and highly secure tracking system.