Players keep Bluetooth off and report its state
ScreenlyOS now switches Bluetooth off when a player starts, and every player reports whether its Bluetooth is on or off.
Nothing on a Screenly player uses Bluetooth, so from ScreenlyOS 26.9.0, players switch it off when they start. That covers a Raspberry Pi's built-in Bluetooth and a USB Bluetooth adapter plugged in later. Wi-Fi isn't affected.
Each player also reports whether its Bluetooth is on or off. The dashboard doesn't show it yet.