title: Looking for some guidance on NFC codes and or NDEF
body: <p>I have an ACR122 NFC reader that I'm connecting to an Android device via USB. The Android device is running ICS and doesn't have native NFC functionality. </p>
  
  <p>The SDK that comes with the ACR122 comes with a sample app that is fairly dense and very sparsely documented, however, I can see that they are sending messages as APDU hex arrays. I'm new to this, so am somewhat unclear on how these commands actually work and in what circumstances. </p>
  
  <p>Meanwhile, it would appear that there's now something called NDEF, which abstracts the APDU and allows for a much less confusing message exchange (at least as per <a href="http://www.netmagazine.com/tutorials/getting-started-nfc-android" rel="nofollow">this</a> tutorial) however, that's only available on NFC enabled devices (or so it would appear)... I'm hoping there's some way to leverage it with the ACR122.</p>
  
  <p>So, my question is:</p>
  
  <p>Does anyone know if I can utilize NDEF with the ACR122's SDK? I'm not trying to do anything complicated, I just want to read and write to the tags.  </p>