Axiad Portal Extension is a bridge between Axiad Portal and Smart Card interface to allow users to issue and manage their Smart Cards and YubiKeys. 

The following permissions are required:

"Read and change all your data on the websites you visit"
To detect which pages need to use this extension, and then (after user or admin confirmation) to allow them to send requests and receive responses.

"Communicate with cooperating native applications"
To communicate with smart cards plugged into your computer.