CiviCRM Community Forums (archive)

How difficult would it be to make Civi track unfinished or incomplete event registrations that people start, but don't complete (for whatever reason)? Just to get an idea of how many people would be engaging in the event registration process, versus how many engage and complete the entire registration/payment... and if that's possible, would the mechanism be different for logged in users versus anonymous? I imagine something like this would require a login and some sort of cookie?