User Login / Cookies view a page once then prompt them to register
I am wondering if there is a way with security assist and cookies to create a user login where users can see one item and then be prompted to register when they attempt to view the second item.
Im building a site where they want the end user to be able to see one item (details page) just to tease the end user but then when they go to the next item or view the details page for a second time it prompts them to register.
Can anyone help me with this? Thanks.