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# Trackers for International Cargo

> How forwarders use chrt trackers on multi-leg orders — attaching trackers to cargo, monitoring across air and ground legs, and reading device-level location.

For multi-leg shipments — especially those crossing customs, changing
custody, or carrying high-value or sensitive cargo — driver-reported
location isn't always enough. A **chrt tracker** attached to a cargo item
gives you an independent stream of position (and, on Tive devices,
temperature and light) that survives every hand-off in the chain.

## When forwarders use trackers

* **International air freight.** Drivers change at the airline counter,
  again on the other side. A tracker stays on the freight through customs
  and arrives with it.
* **Cold-chain medical and pharmaceutical.** Tive trackers report
  temperature alongside location so you have a record of cold-chain
  compliance for every leg.
* **High-value cargo.** Trackers give you a continuous chain of custody
  view independent of the couriers' driver apps.
* **Long ground hauls with hand-offs.** Tracker shows the cargo's
  position even when no driver is actively running a task.

## 1. Attach a tracker to cargo

Trackers are attached at the **cargo** level on an order, not the order
itself — that way, each cargo item can carry its own tracker and the map
shows where each piece is.

1. Open the order at `/orders/<order-ref>`.
2. Click **Link Tracker** on the cargo item you want to track.
3. Enter the tracker's 12-character ID.
4. Pick the cargo item to link the tracker to.

The tracker appears on the cargo item's detail and on the order's **Map**
tab as an independent marker.

## 2. See trackers on the map

On the order page, switch to the **Map** tab and open the layer toggle
in the top-left.

* **Cargo by device** — shows each tracker's current position as its own
  marker, regardless of driver location. Use this view across every leg
  of a multi-leg shipment to see exactly where each piece is.
* **Task group by driver** — driver location for the currently active
  ground segment.
* **Cargo by device + Task group by driver** — combine layers to see
  both at once.

During flight segments, the driver track goes quiet (the flight is
auto-tracked, not driver-tracked) but the cargo tracker continues
reporting position from inside the cargo hold or on the aircraft — useful
proof that cargo actually moved with the flight.

## 3. Read device condition data

For trackers that report condition data (Tive devices report
temperature, light, and shock), open the tracker's sheet from the order
or from [chrt.com/tracking/devices](https://chrt.com/tracking/devices).

The device detail shows:

* Current and historical location.
* Battery state.
* Temperature, light, and shock excursions over the trip.
* The session ID the tracker is currently on.

See [Standalone trackers](/trackers/standalone) for the full tracker
device reference.

## 4. Share tracker data with the shipper

If you want the shipper to see the tracker alongside the order, use the
**Share tracking** action on the order page. The
[public tracking link](/shippers/public-tracking) you generate includes
both driver location and any attached trackers.

You can also share a **tracker session** directly with the shipper org
so they get a long-running view across multiple orders — see
[Share tracking with a shipper org](/trackers/sharing).

## How to know it worked

* The tracker appears on the cargo item's detail card.
* The **Map** tab shows the tracker as a marker (toggle on **Cargo by
  device**).
* The tracker keeps reporting position during flight segments, when the
  driver track is inactive.
* Condition data (on Tive) shows the device's full history when you open
  its detail.

## If something looks different

* **Tracker reports no position.** The device may not have woken up yet.
  Most Tive trackers transmit on motion or on a fixed interval — check
  the device's interval setting.
* **Tracker location is stale during a flight.** Cellular trackers lose
  signal at altitude. Position resumes when the aircraft lands.
* **Tracker is linked but not on the map.** Toggle on **Cargo by device**
  in the layer control. The default view only shows driver tracks.
* Contact [trackers@chrt.com](mailto:trackers@chrt.com) for device-level
  issues.

## Related guides

* [Standalone trackers](/trackers/standalone) — full device reference,
  including provisioning and battery.
* [Trackers on orders](/trackers/on-orders) — the cargo-attached tracker
  flow in detail.
* [Share tracking with a shipper org](/trackers/sharing)
  — give your customer continuous device visibility.
* [Multi-leg orders](/forwarders/multi-leg-orders) — back to the segment
  builder.

> Attach hardware trackers to multi-leg cargo for independent location and condition data.