What I'd like to to is use the RFduino to listen for the bluetooth addresses for multiple phones, and then use SPI to indicate presence of the devices. Is there a way to simply report/read the addresses of beacons currently heard?
The second application would be to make a "beacon detector"... listen for new beacons, and report them to an LCD display. As stores are doing more "hyper-local" beaconing, and looking for my cell phone as I wander nearby, I want to be able to look for them as well.
I don't see a good way to do either of these in the examples, but I'm hoping some of you with more clues about BLE might chime in.