ZOOaccess is a powerful extension to ZOO that allows you use the Joomla ACL to its fullest in your ZOO Elements. Native ZOO element functionality only allows you to assign elements to a User View access once and for all. If you want to control access to a single element in multiple ways (different for the submit form than a layout) you can not do it with standard ZOO. That limitation is now gone - in a big way. Now you can control access based upon User View access as well as User Group levels. You can also control access based upon where the element appears. You can also use the content of one element to control the display of another element (ie conditional element display). All of this is done using an 'override' approach, so you can set your default access rules in the element type configuration and just change it when needed. This adds an entirely new functionality to ZOO - not available via any other means.