Code 128 vs. GS1-128: Do You Need Shipping Compliance?
They look the same, but one is for internal tracking and the other is for the global supply chain. Understanding the difference is critical for shipping.
Code 128: For Your Eyes Only
A **standard Code 128 barcode** is a versatile format perfect for **internal use**. You can encode any alphanumeric data you want (e.g., `BIN-A-001`, `PALLET-12345`). It's perfect for tracking items within your own warehouse or business because you define what the data means.
GS1-128: Speaking the Global Language
A **GS1-128 barcode** is a special implementation of the Code 128 symbology that is required for external shipping and logistics. It's not just a barcode; it's a **data standard**.
It uses **Application Identifiers (AIs)**—numbers in parentheses like `(00)` or `(10)`—to tell scanning systems exactly what kind of data is being read.
- `(00)` indicates a Serial Shipping Container Code (SSCC).
- `(01)` indicates a Global Trade Item Number (GTIN).
- `(10)` indicates a Batch or Lot Number.
When a trading partner receives your shipment, their system instantly understands the data in the barcode because it follows the global GS1 standard.
The Verdict
The choice is simple:
- For internal tracking (your own warehouse, assets, etc.): Use a standard **Code 128**.
- For external shipping (sending to distributors, retailers, etc.): You must use a **GS1-128** to be compliant.