There is no guaranteed method to identify who. What you can identify, from server logs, is the ip, and you can sometimes trace that. However, there may be privacy issues, depending on where you are located.
Oh, of course, there are tools to process multiple IPs, but the data may be of limited value. My best suggestion would be for you to try a sample and see how much data is gives you and decide if it is worthwhile setting that up to process regularly.