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What Is Asset Tracking? A Guide to Fleet, Trailer and Container Workflows

SupplyWolf Team · 4 min read · Asset Tracking Guide

Asset TrackingTrailer TrackingContainer TrackingGPS TrackingGeofencingDetention Management

Understand asset identity, scans, sensor locations and partner events for trailers, containers, reusable equipment and vehicles.

Asset tracking is the practice of identifying equipment and recording events or observations about its location, custody, or movement. In logistics, that may mean a trailer in a yard, a container crossing between transport modes, or reusable equipment returning to a pool. The key distinction is whether a system identifies the asset, records a business event, or reports a location from a device.

Separate identity from location

A useful asset record connects a stable identifier with an owner or custodian and the events that matter to the operation. GS1's Global Returnable Asset Identifier (GRAI) is designed for reusable transport items, transport equipment, and tools. It helps identify the item; the identifier itself does not send a location.

A barcode or RFID read can associate the asset with a gate, dock, or work area. A connected device can send location observations at intervals, depending on its power and network. A partner may report a handoff or shipment milestone. These data points have different meanings and freshness. GS1's EPCIS material describes sharing physical supply-chain events with information about what was involved, where and when it happened, and its business context. It describes event sharing, not necessarily continuous GPS tracking.

Common asset-tracking jobs

  • Trailers and chassis: Identify which unit is assigned, at which facility it is waiting, and whether a yard move or handoff has been recorded. Keep tractor and trailer identities distinct, especially after detachment.
  • Containers and intermodal equipment: Follow gate, interchange, loading, discharge, receipt, and return events across the parties that capture them.
  • Reusable packaging and tools: Focus on asset identity, custodian, transfer, and return rather than assuming a continuously available location feed.
  • Powered vehicles: Evaluate vehicle telematics as its own source; a truck's position does not automatically locate a separate trailer or its contents.

How to choose a tracking approach

List the assets, owners, routes, facilities, and custody changes you need to cover. For each workflow, state the question the team needs answered and how fresh the answer must be. Identify who captures the event, whether it comes from a scan, sensor, driver, terminal, carrier, or partner system, and who is responsible for resolving missing information.

In a demonstration, follow one asset through assignment, handoff, receipt, and return. Show the asset identifier, event source, event time, and time the event reached the application. Then test a missed scan, a stale device, a duplicate event, lost connectivity, and an incorrect transfer. Ask how leased and partner equipment is represented, who can see its status, and how records are corrected.

Compare hardware, installation, power, connectivity, servicing, replacement, subscriptions, integrations, and support. If an asset is late or missing, also define the action: who receives an alert, contacts the partner, or updates the plan. Tracking is most useful when the operating team knows what to do with the information.

Questions buyers ask

Does asset tracking always use GPS?

No. It may rely on scans, RFID, partner events, or connected devices. Confirm what each observation means and when it was captured.

Does tracking prevent theft?

An identifier or event feed does not itself prevent theft or ensure recovery. Evaluate coverage, alert response, and recovery procedures for the specific operation.

How should a pilot be measured?

Agree on asset identity match, event completeness, freshness, coverage gaps, and exception handling for a defined route or facility sample. Keep those measures tied to the tested assets and process.

Asset Tracking buying guidance

At a glance: Asset tracking identifies and records the status or movement of reusable or operational assets—such as returnable transport items, trailers, containers, chassis, tools, and equipment—using identifiers and observations captured through processes or technologies such as scans, tags, GPS, or partner events. Identification, event sharing, and precise live location are different capabilities; the asset type and deployment determine which evidence is available. Global Returnable Asset Identifier (GRAI); GS1 EPCIS: enabling visibility with real time information on supply chain events; GS1 Traceability standard, version 1.3.0

Common workflows

Questions to ask providers

  • What asset classes, individual units, and ownership boundaries are in scope, and which identifier is retained over the asset's life?
  • Does the proposed method report an event, an approximate last-known location, or a continuously sampled position, and what is the evidence source for each?
  • Which scan, tag, gateway, device, power, network, roaming, and replacement components are included in the design and quote?
  • How are missing, duplicated, delayed, out-of-order, and contradictory asset events reconciled across carriers, 3PLs, and customer systems?
  • What permissions, retention, data export, partner access, device security, and decommissioning controls apply to the tracking records?
  • How will the pilot measure identifier-read rates, event completeness, location age, battery service, and recovery workflow without extrapolating beyond the tested routes?

Frequently asked questions

What counts as an asset for tracking?

A supply-chain asset can include reusable transport items, transport equipment, tools, or other identified objects. GS1's GRAI key is especially suitable for reusable transport items and transport equipment; buyers still need to choose what their own asset register covers. Global Returnable Asset Identifier (GRAI)

Is asset identification the same as GPS tracking?

No. An identifier labels which object is involved, while GPS or another observation method may report a position or event. GS1 GRAI describes an asset key, and EPCIS describes visibility-event sharing; neither by itself promises continuous GPS coverage. Global Returnable Asset Identifier (GRAI); GS1 EPCIS: enabling visibility with real time information on supply chain events

What is EPCIS used for?

GS1 describes EPCIS as a standard for sharing supply-chain visibility-event information about physical objects and business events. It can support event exchange between applications and trading partners, but a buyer must still define which events, identifiers, interfaces, and responsibilities apply. GS1 EPCIS: enabling visibility with real time information on supply chain events

Should a business track a container, trailer, and tractor in the same system?

They may be connected operationally but have different owners, identifiers, devices, and observation patterns. Model each asset type separately, then test how a system links a trailer or container to a load and journey without treating a powered-vehicle telematics feed as proof of cargo position. Global Returnable Asset Identifier (GRAI); GS1 EPCIS: enabling visibility with real time information on supply chain events

Can asset tracking prevent theft or guarantee recovery?

No tracking standard or category definition guarantees prevention or recovery. A buyer should evaluate alert coverage, power, communications, response ownership, police or insurer procedures, and actual incident evidence before assigning an expected outcome. GS1 EPCIS: enabling visibility with real time information on supply chain events

How should a tracking pilot be measured?

Use a defined asset population and route sample, and separately measure identity match, event completeness, observation freshness, coverage gaps, device servicing, and exception resolution. Do not generalize one pilot's route or asset mix to all operations. GS1 EPCIS: enabling visibility with real time information on supply chain events; GS1 Traceability standard, version 1.3.0

Sources (3)
  1. Global Returnable Asset Identifier (GRAI) — GS1
  2. GS1 EPCIS: enabling visibility with real time information on supply chain events — GS1
  3. GS1 Traceability standard, version 1.3.0 — GS1

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