title: How to read/send data using the Android Devices 3.5mm headset jack?
body: <p>I was just stumbling around EE Stack and found this post: <a href="https://electronics.stackexchange.com/questions/12498/what-protocol-does-a-headphone-jack-use">What protocol does a headphone jack use.</a> And it sparked some curiosity in me, and I figure, <a href="http://www.creativedistraction.com/demos/sensor-data-to-iphone-through-the-headphone-jack-using-arduino/" rel="nofollow noreferrer">if the iPhone</a> can do it, I want to as well.</p>
  
  <p>Does any one know of any projects that are doing this now or whether or not it's even possible?</p>
  
  <p>UPDATE</p>
  
  <p>RIP</p>