[TYPO3-shop] License or password as product type

[Kim Holberg Andersen]

I would like to sell a license or a password for using my site.
Does anyone know any ext. or how to do this.

More specific: We would like to sell access to a page on the site
where the customer can take a test for a given time, ex. 3 month.

Can we do this in tt_products in connexion with fe_user_reg?

Kind regards

Kim Holberg Andersen