> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.chrt.com/prod/trackers/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.chrt.com/_mcp/server.

# Trackers

> Overview of chrt trackers — the three tracker types (phone via driver app, Tive cellular, OBC), what each one reports, and where to start.

chrt trackers are how you know where cargo is and what condition it's in,
independently of any other system. Use them when you need a verifiable
record of where a shipment went and the conditions it travelled in — for
medical shipments, high-value freight, international cargo, OBC
hand-carry, or anything that needs cold-chain proof.

## The three tracker types

| Type                       | What it is                                                                            | When to use it                                                                   |
| -------------------------- | ------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------- |
| **chrt driver app**        | The driver's iPhone or Android phone running the chrt app                             | Default tracker for any ground leg with a chrt driver. No hardware required.     |
| **Tive cellular trackers** | Reusable Tags and single-use Labels that report GPS, temperature, light, and shock    | Medical, cold-chain, high-value, or international freight. Hardware-level proof. |
| **OBC mode**               | Either a driver phone or a Tive attached to an OBC's bag, across a multi-leg shipment | Hand-carry shipments crossing flights and ground legs.                           |

See [Supported devices](/trackers/supported-devices) for the full matrix
of what each device reports, who provides it, and where it shows up.

## Two ways to use trackers

#### On a chrt order — attach trackers to cargo

When you build or manage an order in chrt, attach one or more
trackers directly to cargo items. The tracker data appears on the
order's Map tab next to driver location, task progress, and
proof-of-delivery — and on public tracking links you share with the
shipper or end recipient.

[Add trackers to an order →](/trackers/on-orders)

#### Standalone — track without a chrt order

Register a device to your organization and start a **tracking
session** for a specific shipment. Tracking sessions live
independently of orders, which makes standalone trackers good for
one-off shipments, customer-owned cargo, or cases where chrt is your
tracking system but the order itself lives elsewhere.

[Set up standalone tracking →](/trackers/standalone)

## Get devices

chrt does not sell trackers self-serve. To request devices, learn about
pricing, or ask whether a specific tracker model fits your operation,
email [trackers@chrt.com](mailto:trackers@chrt.com). See
[chrt.com/trackers](https://chrt.com/trackers) for the marketing overview
of available hardware.

## Where to go next

* **First time setting up?** Start with
  [Supported devices](/trackers/supported-devices) to pick the right
  hardware, then
  [Standalone trackers](/trackers/standalone) to register a device.
* **Already have devices?**
  * To track cargo on a chrt order, see
    [Trackers on orders](/trackers/on-orders).
  * To share a session with a connected shipper, see
    [Sharing](/trackers/sharing).
  * To wire Tive devices into chrt, see
    [Integrations](/trackers/integrations).
* **Building on the API?** See [Tracker API](/trackers/api).

## Related guides

* [Supported devices](/trackers/supported-devices) — the device matrix.
* [Standalone trackers](/trackers/standalone) — register and run sessions.
* [Trackers on orders](/trackers/on-orders) — link trackers to cargo.
* [Battery and data](/trackers/battery-data) — what each device reports.
* [Tracking concepts](/docs/concepts/tracking) — devices, sessions, and
  pings in detail.

> How chrt tracks cargo with hardware devices, the driver app, and on-board couriers.