We need to password lock RFID tag data when we print the tag using ZPL.  Examples found on the web are not working.  We are hoping that if the answer comes from Zebra, we will be successful.

We do not want any person with any reader to be able to read the encoded Hex value in the EPC section of the tag.  Only a person with the password can read it.

A code snippet using Android SDK to read the tag (with the password) will also be helpful.