Aussie Bob
To be honest it is a bit of a grey area. I have heard that the licence requirement has been relaxed for ARO's but can't quote the legislation I'm sorry. At a minimum the guy should identify himself by name and position before he requests anything from you. A call to airport management mightn't hurt either. Can I ask if the port is security controlled or security screened? Makes a real difference to the 'intensity' of the checks.