lucy24 - 10:09 pm on Aug 11, 2011 (gmt 0)

!
Is that what you need to find out? How to identify an individual user when there are lots of them going through the same router? You're not spying on your employees are you? In this case you need to look at the UA. They will rarely be identical, unless you buy your computers in batch lots and the only people who can install software are technicians who come round and hit all computers in a single sweep. (This is rare. If I check something on my library computers I can tell which one I used because they were all inherited from different people at different times.) There's a pretty recent thread somewhere hereabouts linking to a site that illustrates just how distinctive your browser is. Probably in the foo forum.