Configure or Provide Patch for Radius Desk to Allow Whiltelisted MACs

We are using Radius Desk with Radius as a backend to Coova Chilli AP. We have permanent users and dynamic login pages configured successfully. Many of our users use Click to Connect. We would like to keep the client application untouched but whitelist certain MACs on the backend so that they can bypass the landing zone altogether after the initial configuration. This is required for unattended terminals where there is no user present to click through. Low end of pay range will be accepted if this is a configuration item. Higher end will be accepted if a patch to the server is required. We are working with client side Coova version 1.3 . The Radius desk is at an unknown version of approximately 2 years old. We would consider deploying to a new version to support this feature.