Track and trace
Track and trace follows shipments and serialized items through the supply chain in near real time, from supplier ship confirmation through carrier milestones to dock receipt. Tracking answers where something is right now; tracing reconstructs the path it took. The capability runs on carrier integrations, GPS pings, and milestone events, and it is distinct from internal lot traceability used for quality containment and recalls.
Examples
Dark stretch caught: A container of motor laminations shows "discharged" at the port, then nothing for four days. The trace history reveals it missed its rail booking. With nine days of inventory cover left, the buyer pays $1,800 to truck it rather than wait six days for the next train.
Serialized containment: A manufacturer serializes battery modules and scans them at each node. When a customer reports swelling, the trace history shows the affected unit sat 11 days in an un-air-conditioned transload in Phoenix in July, isolating the suspect population to 312 modules on that routing instead of a full month of production.
Definition
The mechanics start at ship confirmation. A supplier sends an advanced shipping notice tying part numbers and quantities to a carrier and a tracking reference; carrier integrations then stream milestones (picked up, port departure, customs cleared, out for delivery) and position pings. Stitched together, those events give planners a live ETA per shipment instead of a promise date from three weeks ago. Coverage is the practical battle: ocean and parcel are well instrumented, while LTL, regional truckers, and tier-two handoffs still produce dark stretches where freight disappears for days.
Two adjacent terms deserve separation. Track and trace follows freight between facilities; traceability follows material identity through production (which heat lot of steel sits in which serial numbers), which is what a recall requires. And tracking data alone is telemetry: it becomes useful when fed into supply chain visibility tools or a control tower that can act on a slipping shipment.
A useful discipline is to instrument by consequence, not uniformly: full milestone tracking on the 200 part numbers that can stop a production line, basic carrier status on everything else.
Related Terms
Traceability
Estimated time of arrival (ETA)
Advanced shipping notice (ASN)
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