What options do you have on the Bluetooth end of the Air Finder BLE-Symphony bridge? If the beacons are sensor data, and the usecase requires encrypting that BLE sensor data, how can the beacons and BLE sensors be modified to send encrypted data?
Also, have you done any BLE sensors that need to ACK transmissions? Beacons are transmitted and then that's it - no acknowledgements. Important if we're using the transmission time as a timestamp for event.