In a web request you also have access to the User Agent info. You can combine this with the IP to get a pretty close approximation to a single user. Subsequent clicks from different IP and/or User Agent will likely be a different person. Though not foolproof, it's closer than IP only.
On Wed, Feb 6, 2013 at 1:10 PM, Ken Snyder <[email protected]> wrote: > We have an email newsletter that includes a tracking image, plus each link > contains a hash so that we know which recipients opened the email and who > clicked on what link. > > The client is asking if it is possible to detect a) if that newsletter has > been forwarded to someone else, b) if that new recipient opens the email, > and c) if that new recipient clicks on the links. > > My only thought is that we could make a loose inference of second-hand > opens and clicks by tracking the IP Address of each open and click. E.g. if > there are two clicks from two different IP Addresses it *could be* another > person. > > Is there any other way to detect second-hand opens and clicks? > > Thanks, > > Ken Snyder > > /* > PLUG: http://plug.org, #utah on irc.freenode.net > Unsubscribe: http://plug.org/mailman/options/plug > Don't fear the penguin. > */ /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
