Ambient Devices
The Ambient Devices registry shows every Bluetooth Low Energy (BLE) device that the NISC system has detected in your facility but that has not been registered as a tracked employee or asset. These are sometimes called "ambient" or "background" devices — they include personal phones, laptops, wearables, and any other BLE-capable equipment that moves through BLE gateway coverage areas.
What Are Ambient Devices?
When a BLE gateway receives a signal from a device it does not recognise as a tagged employee or asset, it records that device as an ambient detection. Over time, the system builds a registry of all such devices, including:
- Phones — personal smartphones in pockets or on desks
- Laptops — Bluetooth-enabled computers
- Wearables — smartwatches, fitness trackers
- Headsets — Bluetooth audio devices
- Speakers and other audio equipment
- Tablets
- Beacons — third-party beacon hardware
- Other — any BLE device the system can identify
Ambient devices are passive observations. The system does not track them as personnel or assets unless you deliberately register them as such. However, the registry is useful for:
- Verifying BLE coverage (detecting signals confirms gateways are working)
- Auditing unexpected devices on-site
- Identifying devices that should be registered as assets
Navigating to Ambient Devices
- Log in to the NISC Mustering System.
- In the left navigation menu, click Ambient Devices.
- The registry page loads with summary cards and a filterable table of all discovered devices.
Understanding the Summary Cards
Six summary cards at the top of the page give a quick breakdown of the discovered device population:
| Card | What it shows |
|---|---|
| Discovered Devices | Total number of unique ambient devices ever detected |
| Active in Last 5 Min | Devices detected within the past 5 minutes |
| Phones | Devices classified as phones |
| Laptops | Devices classified as laptops |
| Wearables | Devices classified as wearables |
| Other | Devices in any other category |
Filtering the Device List
The filters panel appears just below the summary cards. All filter changes apply immediately — no need to click a search button.
Filter by Device Type
- Click the Device Type dropdown.
- Select a type from the list (phone, laptop, wearable, beacon, speaker, tablet, headset, audio, ambient, other, or any type discovered in your environment).
- The table narrows to only that device type.
- Click the X inside the dropdown to clear.
Filter by Manufacturer
- Click the Manufacturer dropdown.
- Type in the search box to narrow the list, then select a manufacturer.
- Only devices from that manufacturer are shown.
- Click the X to clear.
Filter by Presence Status
- Click the Presence Status dropdown.
- Select Active (detected in the last 5 minutes) or Recent (detected within the last hour but not the last 5 minutes).
- Note: selecting no status shows all devices regardless of when they were last seen, including offline/inactive ones.
- Click the X to clear.
Include Hidden Devices
A Include hidden devices checkbox controls whether devices that have been marked as hidden appear in the list.
- Checked (default): Hidden devices appear with a "Hidden" visibility badge.
- Unchecked: Hidden devices are excluded from the table entirely.
Tip: If you have manually hidden certain persistent ambient devices (such as fixed installed equipment you want to suppress), unchecking this option gives you a cleaner view of genuinely active ambient traffic.
Clearing All Filters
Click the Clear Filters button to reset all four filters (device type, manufacturer, presence status, and include hidden) back to their defaults.
Understanding Presence Status
Each ambient device has a presence status based on how recently it was detected:
| Status | Colour | Meaning |
|---|---|---|
| Active | Green | Detected within the last 5 minutes |
| Recent | Amber | Detected within approximately the last hour |
| Offline / Inactive | Red | No detection for an extended period |
The Device Table
The main table shows the following columns:
| Column | Description |
|---|---|
| Device | Name (custom or derived), model/manufacturer subtitle, and device ID |
| Type | Device category (phone, laptop, wearable, etc.) |
| Presence | Active, Recent, or Offline badge |
| Last Seen | Relative time since the last BLE detection |
| Detections | Total number of times this device has been detected across all sessions |
| Visibility | Whether the device is Visible or Hidden |
| Actions | Details button to open the device detail modal |
Sorting
Column sorting is not available on ambient devices. Use the filter controls to narrow results.
Pagination
The ambient device list is paginated server-side. By default, 25 devices are shown per page.
- Use the page navigation controls at the bottom of the table to move between pages.
- Changing a filter resets the view back to the first page automatically.
Note: Because pagination happens on the server, the total record count shown reflects all devices matching your current filters, not just the ones visible on screen.
Viewing Device Details
To see the full information for a specific ambient device:
On desktop:
- Find the device in the table.
- Click the Details button in the Actions column.
- A detail panel slides open showing all available information.
On mobile:
- Tap any device row in the list.
- The same detail panel opens as a modal.
Detail Panel Fields
| Field | Description |
|---|---|
| Device ID | The unique identifier for this device (typically the BLE MAC address) |
| Type | Device category |
| Manufacturer | Manufacturer name as reported by the device |
| Model | Model name or identifier |
| Custom Name | If a label has been manually applied, it appears here |
| Presence | Current presence status badge |
| Visibility | Visible or Hidden badge |
| Total Detections | Cumulative number of BLE detections logged |
| First Seen | Date and time this device was first detected |
| Last Seen | Date and time this device was most recently detected |
| Notes | Any free-text notes attached to this device |
| Tags | Any classification tags applied |
Click Close to dismiss the detail panel.
Refreshing the Registry
Click the Refresh button in the page header to reload the ambient device data from the server. The button shows a loading indicator while refreshing. A success notification confirms when the data is up to date.
Mobile View
On phones and tablets, the Ambient Devices page uses a mobile-optimised layout:
Summary Chips
A hero section at the top displays chip-style counts for total devices, active devices, phones, and wearables.
Search
A search bar lets you filter the visible device list by name or device type. This is a local filter applied to the currently loaded page of results — it does not search across all pages.
Device List
Devices appear as scrollable rows showing:
- Device name (custom label, manufacturer/model, or device ID as fallback)
- Device type and last-seen time
- The BLE device ID in small text
- Presence status badge
- A chevron indicating the row is tappable
Tap any row to open the full device detail panel.
Actions
A Refresh button in the Actions card reloads the device list from the server.
Frequently Asked Questions
Why are there so many ambient devices?
Every BLE-capable device that enters a covered area is recorded. In a busy facility with many employees carrying phones, the ambient registry can grow to hundreds or thousands of entries. This is normal. Use the filters to focus on what you need.
Can I delete ambient devices from the registry?
The ambient registry is read-only from this page. Devices are automatically managed based on detection activity. If a device stops appearing in the environment, it will show as Offline or Inactive. Contact your system administrator if you need bulk cleanup.
What does "Hidden" mean?
A device can be marked Hidden to suppress it from the default view. This is useful for permanently installed equipment or known-safe devices that you do not need to review regularly. Hidden devices are still tracked; they are simply excluded from the visible list unless you enable the "Include hidden devices" checkbox.
How is "First Seen" determined?
The First Seen date is the timestamp of the very first BLE detection event ever recorded for that device ID. It reflects when the device first came into range of any gateway.
The Manufacturer field shows a blank or unknown value — is that a problem?
Some BLE devices do not advertise manufacturer information, or the system may not have a record for that manufacturer code. A missing manufacturer is not an error; it simply means the device did not provide that information in its BLE advertisement packet.