Display who has read a document

We have a reports database that has hundreds of reports added everyday. I’ve been asked to determined what reports are actually being viewed. This database is accessed by both web and client users. Any suggestions on how to capture the “who read” information?

Thanks

Brian

Subject: Do the users need to authenticate to read the document?

If they are not authenticated users it’s really hard, if they are authenticated then it becomes much easier.

Subject: Yes, they are authenticated users

Yes, they are authenticated usersThanks