User Activity

I need to read the NFCTag ID but I haven't worked out how as yet. Can anyone point me at an example?David
I have C1, 5 and 6 tags and I just need to enable energy harvesting so I can detect when tag is being read. Is there a simple way to do this, e.g. using the ST25 phone app. I have tried changing dyn register #1 but that did not work. Please advise...