如何在Django中临时存储未注册用户的输入？

I would like a user to input their postal address (or zip code) so I can present them with localized information for the duration they are on the site. I only want to save their address if they take a future action that requires a new database entry. Since I only care about holding onto the address during their current visit, I think maybe this would have something to do with extending sessions in Django? Is this the best way to go about it? Are sessions a secure way of temporarily storing an address?I would like a user to input their postal addre