Barcode tracking is the optical identification method for reading carrier and lot IDs during material movement and tool loading events - it provides a low-cost, widely compatible foundation for traceability in semiconductor operations.

What Is Barcode tracking?

• Definition: Use of machine-readable barcode labels to encode FOUP and lot identity.
• Deployment Context: Applied at manual stations, hand scanners, and fixed scan points.
• Data Function: Confirms identity at transfer, storage, and processing checkpoints.
• System Role: Often used as primary or backup channel alongside RFID.

Why Barcode tracking Matters

• Traceability Baseline: Ensures every carrier movement can be linked to a validated identifier.
• Operational Simplicity: Mature standards and tooling make implementation straightforward.
• Exception Recovery: Provides fallback when RFID reads fail or are unavailable.
• Cost Efficiency: Low infrastructure cost supports broad deployment coverage.
• Compliance Support: Scan logs strengthen audit trails for lot history and disposition.

How It Is Used in Practice

• Label Governance: Standardize code format, placement, and print quality controls.
• Scan Enforcement: Require barcode verification at critical handoff and load points.
• Error Handling: Trigger hold and reconciliation workflow for unreadable or mismatched codes.

Barcode tracking is a practical identity-control layer for fab logistics - consistent scan discipline protects chain-of-custody, reduces misrouting risk, and supports reliable lot traceability.