The device
| Broadcast name | MX Master |
|---|---|
| Device | Logitech MX Master mouse |
| Made by | Logitech |
| Type | Peripheral |
| Is it a tracker? | No, not a tracking device |
Peripherals sleep aggressively and advertise less often when idle. Waking the device makes it appear reliably.
Should you be concerned?
No. This is ordinary consumer hardware and it is not capable of tracking anyone. Seeing it in a scan means one is powered on within radio range, typically ten to thirty metres indoors, which routinely includes neighbouring flats and the street outside.
If it is not yours and it bothers you, check whether it appears at a consistent time of day. A device that shows up in the evening and disappears overnight belongs to a household nearby, not to you.
If it’s yours and you’ve lost it
Select it in a scan so the rest of the list drops away, then walk the room watching the signal strength. It rises as you get closer. When it stops rising, turn 90 degrees and sweep again, two passes usually put you within a metre.
Save it under My Devices and its position gets recorded every time your phone detects it, so next time the map tells you which building before you start looking.
Devices with similar names
Other broadcast names that turn up in the same kind of scan.
- What is “Magic Keyboard” on Bluetooth?, Apple Magic Keyboard
- What is “Apple Pencil” on Bluetooth?, Apple Pencil
- What is “Joy-Con (L)” on Bluetooth?, Nintendo Switch Joy-Con
- What is “DualSense” on Bluetooth?, PlayStation DualSense controller
- What is “Roku Voice Remote” on Bluetooth?, Roku streaming remote
- Bluetooth scanner for iPhone, Scan tab
- How to find something a child left at school
- Full Bluetooth name lookup, the complete list
Common questions
What is MX Master on my Bluetooth?
A Logitech MX Master wireless mouse in Bluetooth mode. It appears in a scan whenever one is powered on within radio range.
Is it dangerous or tracking me?
No. This is ordinary consumer hardware with no tracking capability. Bluetooth carries through walls, so devices from neighbouring flats and the street outside appear routinely.
How far away can it be?
Bluetooth Low Energy typically reaches ten to thirty metres indoors and further outdoors with a clear line of sight. Walls, metal and water all reduce that considerably.