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2. User Guide

SecuX Authenticator – How It Works

SecuX Authenticator is a desktop application used to manage and configure your SecuX PUFido security key. The application provides a secure interface to manage passkeys, PIN protection, and device settings, ensuring your authentication credentials remain protected inside the hardware device.

Follow the steps below to set up and manage your SecuX PUFido key.

Launch the SecuX Authenticator Application

Start by opening the SecuX Authenticator desktop application on your computer.

When the application launches, the main screen will prompt you to insert your SecuX PUFido key.

At this stage, the application is waiting for a compatible security key to be connected.

Connect Your SecuX PUFido Key

Insert your SecuX PUFido key into an available USB port on your computer.

Once connected, the application will automatically detect the device and establish communication with it.

The application interface will then display information about the connected device, including:

  • Device name

  • Firmware version

  • Supported authentication protocols

  • Device status

This confirms the key is successfully connected and ready for configuration.

Create a Security PIN (First-Time Setup)

When using the device for the first time, you will be prompted to create a security PIN.

The PIN protects access to the FIDO2 authentication functions stored on the device.

Steps to create a PIN

  1. Select Set PIN.

  2. Enter a new PIN in the provided field.

  3. Confirm the PIN by entering it again.

  4. Click Save to complete the setup.

 

PIN requirements

The PIN must meet the device's security requirements, which may include:

  • Minimum length

  • Numeric or alphanumeric characters

Once the PIN is created, it will be required whenever sensitive operations are performed on the key.

⚠ Important
If the PIN is entered incorrectly too many times, the device may temporarily lock to protect against unauthorized access.

Access the Device Dashboard

After the PIN setup is complete, the application will display the device dashboard.

The dashboard provides an overview of your SecuX PUFido key and allows you to navigate between different management features.

From the sidebar menu, you can access:

  • Passkeys

  • Security settings

  • Device configuration

  • Factory reset options

  • Application settings

This dashboard serves as the central control panel for managing the security key.

View and Manage Passkeys

Select Passkeys from the navigation panel to view credentials stored on your device.

Passkeys are FIDO2 credentials stored securely inside the hardware key, ensuring that private keys never leave the device.

In this section you can:

  • View registered passkeys

  • Identify the services associated with each credential

  • Review the credentials stored on the device

Each passkey corresponds to an account registered with a website or service that supports FIDO2 authentication.

Because passkeys are hardware-protected, they cannot be extracted from the device, which protects them from malware and phishing attacks.

Verify PIN for Protected Actions

Some operations require PIN verification to confirm that the authorized user is performing the action.

When prompted:

  1. Enter your device PIN.

  2. Click Confirm.

Once the PIN is verified, the application will allow the requested operation to proceed.

Examples of actions that may require PIN verification include:

  • Viewing protected credential information

  • Changing the PIN

  • Resetting security settings

Change the Device PIN

If you need to update your device PIN, you can do so from the PIN management section.

Steps to change the PIN

  1. Navigate to the Change PIN option.

  2. Enter your current PIN.

  3. Enter a new PIN.

  4. Confirm the new PIN.

  5. Click Confirm to apply the change.

Once completed, the new PIN will replace the previous one.

For security reasons, choose a PIN that is unique and difficult to guess.

Configure Application Settings

Open the Settings section from the navigation menu to configure the SecuX Authenticator application.

Available configuration options include:

Language

Change the language used by the application interface.

Custom Icons

Customize icons used to represent credentials or services stored on the device.

This can make it easier to quickly identify different accounts.

Debugging Tools

Enable debugging logs for troubleshooting or when requested by the support team.

Debug logs help diagnose connection or authentication issues.

Help and Information

Access information about the application, including:

  • Version details

  • Documentation

  • Support resources

Reset Application Settings (Optional)

If necessary, you can restore the application configuration to its default state.

Resetting application settings will:

  • Restore all software preferences to their default values

  • Remove customized interface settings

Important:
This operation does not delete credentials stored on the hardware key.

Perform a Factory Reset of the Security Key

For advanced maintenance, SecuX Authenticator allows performing a factory reset of the PUFido key.

A factory reset will permanently erase all stored authentication data.

This includes:

  • FIDO2 passkeys

  • U2F registrations

  • Stored accounts

  • The device PIN

After the reset, the key will return to its original factory configuration.

⚠ Important
This action cannot be undone.

Confirm the Factory Reset Process

To perform the reset:

  1. Select Factory Reset within the application.

  2. Choose the FIDO2 application reset option.

  3. Confirm the warning message.

  4. Follow the instructions displayed on screen.

You may be prompted to:

  • Unplug the device

  • Reinsert the device

  • Confirm the reset operation

Once the reset process finishes, the device will restart in factory state.

Reconfigure the Device After Reset

After a factory reset, the key behaves like a new device.

You will need to:

  1. Create a new device PIN

  2. Register new passkeys

  3. Configure settings again if necessary

Once configured, the key is ready to be used again for secure authentication across supported services.

Updated on 19 May 2026