Is a Permanent Login (Auto-Login) Possible?

[nagelkruid]

I installed this mod successfully. I would like to add an additional feature on the login header. If customer logged in already, i would like to display customer's first and last name follow by [Logout]. This is very similar to Welcome message on the main page, except for i would like to have it display on the header file. The benefit of it is to let customer know that his session is still active. How do i accomplish this?

In file, /includes/languages/english/MYTEMPLATE/header.php
I changed define('HEADER_TITLE_LOGOFF', '[Log Out]');
to
define('HEADER_TITLE_LOGOFF', %s[Log Out]');

The display result shows the same. What is the actual variable to represent current user's first and last name?

$_SESSION['customer_first_name']
$_SESSION['customer_last_name']