> ## Documentation Index
> Fetch the complete documentation index at: https://docs.now-os.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Devices

> Monitor the main register and secondary devices from the backoffice: connection status, paired devices, claiming and releasing.

The **Settings → Devices** page in the backoffice is your remote view of the
store's devices: the main register, its health, and every paired secondary
device. It is also where you designate a store's main register. The page
works the same way in restaurant mode and retail mode.

<Note>
  On screen, the page is titled **Primary iPad** — it is the **Devices** page of
  the **Settings** menu.
</Note>

## Main register status

The main register regularly sends a sign of life to the cloud whenever it has
internet access. At the top of the page, a colored dot and a label summarize
its status, followed by the time of the last sign of life ("last
heartbeat"):

* **Online** (green) — a sign of life was received less than one minute ago.
  All good.
* **Silent** (orange) — no sign of life for one to two and a half minutes. A
  **Primary iPad has been silent** banner appears.
* **Offline** (red) — no sign of life for more than two and a half minutes. A
  **Primary iPad appears offline** banner appears.
* **No heartbeat yet** — the main register has never reported in (it was just
  claimed).
* **No primary iPad claimed** — this store has no main register yet.

<Note>
  **Silent** or **Offline** does not mean the store has stopped. This page
  reflects what the cloud knows: if the store's internet is down, the main
  register stops sending signs of life but service continues normally on the
  local network — see [Connectivity](/en/pos/connectivity). In that case, the
  device connection states shown below may be stale.
</Note>

The page refreshes on its own every 30 seconds while the tab is open. The
**Refresh** button forces an immediate update.

## Operational health and queues

The second banner does more than check whether the iPad answers. It summarizes
whether its durable queues are actually draining: orders and sales, closures,
availability, stock, paired devices and printing. France-only fiscal queues
show as **Not applicable** in Morocco.

* **Operational** — no queue is delayed and local storage is responding.
* **Delay detected** — a queue is taking longer than expected or several
  attempts have failed.
* **Action required** — a queue is blocked, a print outcome is uncertain, or
  the local database is no longer writable.
* **Operational state unknown** — facts are missing, invalid or stale. This is
  never presented as green.
* **Training mode** — facts come from the training space and do not count as
  live-service health.

The **Active incidents** section gives the next action. The **Operational
queues** table shows each queue's pending count, oldest age, last success and
current state. For an uncertain print, check the paper on site before retrying.
For a storage error, stop taking new orders on that register and contact NowOS
support.

## The overview

When the store has a main register, the page shows a diagram of the store —
the main register in the center, linked to each paired device — followed by
four summary cards:

* **Reference data** — the version of the published menu and settings the
  main register is using, and when it last synced. Handy for checking that a
  recent publish has arrived — see [Menu](/en/backoffice/menu).
* **Live orders** — how many live order connections the main register sees
  right now. Pairing is shown separately in the diagram and table.
* **Pending sync** — pending device updates. Every other queue is detailed in
  **Operational queues**.
* **Uptime** — how long the app has been running uninterrupted on the main
  register.

## The Paired devices table

The **Paired devices** section lists every paired secondary device:

* **Device** — the name given to the device when it was paired.
* **Model** — the iPad model.
* **App** — the installed NowOS app version.
* **Paired** — when the device was paired.
* **Last seen** — its last known activity.
* **Connection** — whether the device is currently receiving live order
  updates from the main register: **Connected** (with since when),
  **Offline**, or **Unknown** when the information is not available.

## Designating the main register

At the bottom, the **Claim a primary iPad** card (or **Re-claim this
location** if a main register already exists) is where you designate the
store's main register.

<Steps>
  <Step title="Generate the token">
    Click **Generate claim token**. The **Claim token** window shows a
    one-time QR code, valid for 5 minutes, with its expiry time and the
    location it belongs to.
  </Step>

  <Step title="Scan it on the iPad">
    On the iPad that will become the main register, scan the QR code during
    setup. Can't scan? Click **Can't scan? Show the raw token**, then
    **Copy token**, and enter the token on the iPad.
  </Step>
</Steps>

The full procedure on the iPad side is covered in
[Pairing your devices](/en/setup/pairing). If the token expires, simply
generate a new one.

## Releasing a device

### A secondary device

On its row in the **Paired devices** table, click **Release**. The
**Release paired device** window recaps the device and its last activity;
confirm with **Release device**. The device signs out on its next sync and
will need to be re-paired on site to serve again.

### The main register

At the top of the page, click **Release primary**, then confirm in the
**Release primary iPad** window.

<Warning>
  **Release primary** stops the store immediately: the iPad goes back to the
  welcome screen and secondary devices can no longer take orders. Save this
  action for replacing the iPad, then generate a new claim token to designate a
  main register again — see [Pairing your devices](/en/setup/pairing).
</Warning>

## Going further

* The main register's day-to-day role:
  [The main register](/en/pos/main-register).
* What devices see during an outage:
  [Connectivity](/en/pos/connectivity).