Search code examples
cookiescross-domainuser-tracking

Cross Domain User Tracking

We have several websites on different domains and I'd like to be able to track users' movements on these sites.

  • Obviously cookies are not feasable, because they don't cross domain borders.
  • I could look at a combination of IP address and User Agent, but there are some cases where that does not work.
  • I don't want to use flash or other plugins.

Any ideas? Or am I doomed to rely on the IP/User_Agent combination?

Solution

  • You can designate one domain or subdomain to tracking and have it serve a 1x1 pixel image which you include in all pages you would like to track. Serve a cookie with the image, look at the tracking domain's server logs, voilà.