WP Fusion also has the ability to control widget visibility based on a user’s tags.
By checking the box next to Conditionally Display This Widget, the widget only be visible to logged in users.
There are two tag boxes. The first lets you specify a list of tags required to view the widget. The widget will be hidden from users who don’t have these tags.
The second box lets you hide the widget from people who have certain tags. This might be useful in removing a promotion after the customer has already purchased the product, for example.