Retrieving device WiFi MAC address with iOS 7

Question

Our app is using device WiFiMAC address to uniquely identify a device. As per the Apple doumentation we shall start using identifierForVendor property of UIDevice but my app is

Answer 1

This was intentionally removed from the SDK in iOS 7. You can no longer retrieve the MAC address. Techcrunch has one of several stories on it, and it was confirmed at WWDC.