Is there a "click through" log for the captive portal somewhere (i.e. 
not running with RADIUS)?

We run a couple of captive portals without radius just as a general "hi 
there" page, but we'd also like an idea of the usage for the times when 
we don't have the captive portal Status page up in front of us (i.e. 
most of the time) and a log would be handy for that. E.g. similar to the 
DHCP lease log.

Does this exist somewhere, and if not, is it pretty simple to hack 
together (if so, I'll try to do it)?

cheers, michael