"However, that hasn’t stopped third-party firms, such as Scosche Industries, from developing alternative cans for the new Shuffle"
Surely that proves that this is no more than a simple encoder - after all, without adding pins to the plug, there is no way to control the shuffle with the old-fashioned open/closed circuit type of thing - that would short out the audio.
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Alternatives
"However, that hasn’t stopped third-party firms, such as Scosche Industries, from developing alternative cans for the new Shuffle"
Surely that proves that this is no more than a simple encoder - after all, without adding pins to the plug, there is no way to control the shuffle with the old-fashioned open/closed circuit type of thing - that would short out the audio.