# Feature Keys

The Feature Keys page shows the feature keys applied on each discovered reader.

The following actions are available:

- Uploading feature key files
- Downloading Feature Keys page information in CSV
- Discovering devices

Button | Description
--- | ---
Upload feature keys | Upload feature key files.
Download as CSV | Download device list with all data in CSV format.
Discover devices | Discover connected devices.

The Feature Keys page also allows comparing uploaded feature keys between readers in a group:

Feature Key Color | Description
--- | ---
| The feature is unlocked for the device.
| The feature is unlocked for some devices in the group, but not for the respective device.

Click the Difference dropdown menu to select the following menu items for comparison:

Item | Description
--- | ---
Unlocked | Show unlocked feature keys for all devices.
All | Show unlocked and locked feature keys for all devices.
Common | Show feature keys which are unlocked for all devices.
Difference | Show feature keys which have a different status among the devices.

Click the Upload feature keys button to upload a feature key file from your computer:

Item | Description
--- | ---
Password | Password is only needed if the device requires a password.
Browse | Browse files with .xml extension on your computer.
Verification | Shows verified status.
File Name | Name of the feature key files.
Device Name | Name of the device which gets the new feature key file.
Serial Number | Serial number of the device.
Feature Keys in File | Feature keys contained in the file.