title: How to get Mac Address From CBPeripheral And CBCenter
body: <p>I need to take target mac address from input connection and outgoing connection from CBPeripheral And CBCenter. identifier dose not define in them.
  look was remove from iOS 7. Is there any other way?</p>
  
  <p><a href="https://developer.apple.com/library/prerelease/ios/documentation/CoreBluetooth/Reference/CBPeripheral_Class/index.html" rel="noreferrer">https://developer.apple.com/library/prerelease/ios/documentation/CoreBluetooth/Reference/CBPeripheral_Class/index.html</a></p>