The onboard Bluetooth device of the Raspberry Pi Zero W can be disabled by adding
to the /boot/config.txt file.
More boot config options are documented here: https://www.raspberrypi.org/documentation/configuration/config-txt/
A interesting project just got successfully funded on Kickstarter. The “Dash” is a pair of wireless Bluetooth LE in ear headphones developed by the Munich company bragi. But not just that it’s also a
- Bluetooth Headset
- A 4GB Audio Player
- A monitor for your steps, heart rate and oxygen saturation.
The German company Sensorberg offers Bluetooth Low Energy (BLE) beacons called “iBeacons” and a SDK for proximity detection.
MagicMap is a free framework for indoor positioning based on Wifi and Bluetooth signals.
A list of other partly commercial services: Indoor RTLS systems