title: Can the Raspberry Pi's Bluetooth be put into "promiscuous" mode?
body: <p>Can the Bluetooth adapter included in the Raspberry Pi models be put into some sort of "promiscuous" mode -- so that it reports to the host <em>all</em> Bluetooth-activity that it "hears", even if it is not itself part of the conversation?</p>
  
  <p>I'm not trying to break encryption, just want to be aware of any BT-radio activity going on in the device's proximity...</p>