Is there a way to track when a PDF is opened? Perhaps by embedding some script into the pdf itself?
I saw the question below, and I suppose the answer is "no" for javascript, but I am wondering if this is possible at all.
The problem with technologies like that is that they can never be absolute.
First, it's a security violation to trigger an external event and the software writers likely wouldn't support it (or, at least I hope not).
Second, its dependent on things like the network. What happens when someone downloads it and then reads it while offline on a plane, for example? You won't get the notification.
Third, there are multiple ways to read PDF files. Some people read them with readers you've likely not heard of (my favorite is a linux application that I like much better than the Adobe's AcroRead).
So even if you could do it (and I'd argue you shouldn't, but that's not answering your question), the real answer is "no" but even if the software supported it, it still wouldn't be reliable in the first place.