Bluetooth Devices
Little Eye lists the Bluetooth LE devices around you. Open the Bluetooth tab in the macOS bar or tap Bluetooth in the iOS app, press Scan, and every device that advertises within thirty seconds appears in one list — sorted by name, or by nearest, newest or type — decoded on your device, from the vendor and services to iBeacon and Eddystone beacon frames.
Click or tap a device to see its details: when it was seen and its signal strength, beacon data, and the services it advertises and raw bytes tucked under Raw data. You can copy a single device as JSON. On the Mac, devices already paired with your computer are listed too, marked with a link icon, with their hardware address and device class. Keep scanning listens for another minute without losing the list.
Narrow a busy list with search and the device-type buttons: Trackers, Headphones & earbuds, Speakers & TVs, Keyboards & mice, Phones & computers, Wearables & fitness, Smart home, and Beacons. A device's type comes from what it declares about itself — its device class, beacon frame, Apple Continuity message, Microsoft device beacon (Windows PCs), advertised services, or the device type it declares (its Bluetooth Appearance). When a device declares nothing, Little Eye falls back to its maker, but only for makers that build one kind of product, such as Sonos speakers or Tile trackers; the device's details then say the type is from maker. Anything else is listed under Other — names are never used to guess.
Where the type information comes from. Company names and the company IDs that devices broadcast come from the Bluetooth SIG's official Assigned Numbers registry, and so do the names of advertised services and tracker IDs. Apple Continuity message names come from public reverse-engineering, because Apple does not document them. Microsoft's beacon format comes from Microsoft's published protocol documentation. Appearance names come from the same Assigned Numbers; which type an Appearance stands for is Little Eye's own short mapping, and a device that declares itself a generic "Tag" is never treated as a tracker. Which type a signal or a maker stands for is not taken from any external database: it is a short mapping maintained by Little Eye. The maker list is a reviewed classification of the Bluetooth SIG's company registry and only includes companies that build one kind of product — 114 makers such as Sonos (Speakers & TVs), Sennheiser (Headphones & earbuds), Tile (Trackers), Oura (Wearables & fitness), and Nest, ecobee and Signify (Philips Hue) (Smart home). Makers with mixed product ranges, such as Apple, Samsung, Bose, Logitech and Philips, are never used to guess a type.
The iPhone sees less than the Mac. iOS withholds Apple's own Bluetooth data from third-party apps, so AirPods, AirTags, AirPlay speakers and other Apple devices can't be recognized there and appear as Other or not at all, and there is no paired-device list. Little Eye still shows the name your iPhone remembers for a device, and marks devices that broadcast nothing as a possible AirTag or Find My item, or a possible Apple device — clearly labelled as guesses. The same scan on a Mac recognizes them.
Identify a device. Open a device that accepts connections and press Identify: Little Eye connects to it briefly, lists the services it offers, reads its maker, model, product ID and battery level when it shares them, and names it if it is a known tracker — Apple AirTag or Find My accessory, Tile, Chipolo, Samsung SmartTag or Pebblebee. It only reads; nothing is changed on the device, and it never pairs. On an iPhone this is the only way to confirm an AirTag that has been separated from its owner. A device you identify as a tracker then shows as that tracker in the list, and one that shares its maker or model shows that name instead of "Unknown device". An identified AirTag can then be asked to play its sound, so you can find it — the only thing Little Eye ever sends to a device — though AirTags play for others only while away from their owner. Identify possible trackers checks the likely trackers in the list in one go, several at a time. In Settings you can have Little Eye identify devices automatically after each scan, and choose which device types to identify (trackers by default); it is off by default, and for trackers it only checks which services a device offers.
Scanning is a Pro feature and the first scan asks for Bluetooth permission. Nearby devices broadcast these names publicly; Little Eye never uploads them, and nothing about a scan is logged.