Session match IP

[eluser]Nial[/eluser]
I noticed these two settings in config.php:

Code:

$config['sess_match_ip']        = FALSE;
$config['sess_match_useragent']    = TRUE;

I have set my sessions to never expire, and don't require users to login. Obviously, this is not standard practice, but it's perfect for my situation. Now, my question: is it work setting sess_match_ip to TRUE? I take it this means that session with the same IP will share database rows?

Is matching the useragent better, in this case?