are SESSION's necessary or can Auth keep track of a user

[eluser]Colin Williams[/eluser]
Sessions are the long-standard way of maintaining data across HTTP requests without sending the data along each time. In old systems, you would keep POSTing data from page to page.

Would it be possible to add a user# var to the main class and include that userID into the cart table?

Remember, once a new HTTP request occurs, the class, everything is in a brand-new state.