When you purchase a digital product, the vendor often generates a unique string to validate your copy. This prevents piracy and ensures that the software is only running on authorized hardware.
In massive data warehouses, using names or simple numbers isn't enough. Unique strings allow systems to fetch specific records—like a customer profile or a shipping order—in milliseconds.
Every transaction on a ledger is assigned a unique hash. This allows users to track the movement of assets without needing to share personal information.