Findphone: Locate a nearby Bluetooth device by signal strength
Summary
Findphone is a macOS command-line tool that locates nearby Bluetooth devices by signal strength. It offers a survey mode to detect all nearby devices and a hunt mode to track a single device by name, reporting RSSI readings from multiple sources and optionally masking data for privacy. The tool notes limitations such as lack of bearing, indoor range constraints, required Bluetooth access, and the fact that signal strength is a coarse distance proxy.