By reconizing if you mean the head unit knows what you're plugging in,the answer is no. The aux plug will play a audio signal out of the IPOD or MP3 player.
That's what I was wondering. Is the OP talking about recognising any song/track/performer information on what's being played at the time, or just whether or not the audio output from the device will be played through the bikes HK radios aux input port?