.. viewing-device-info.rst .. _viewing-device-info: ========================== Viewing Device Information ========================== In addition to assisting with passkey registration and authentication flows, the YubiKey Passkey Enabler app also has some helpful functionality on its home page for viewing :ref:`security key device information ` and the location of your :ref:`Android device's NFC sensor `. .. _using-the-app-device-info: Viewing AAGUID, PIN status, and supported interfaces ==================================================== When you connect your security key via USB or scan via NFC, the home page of the YubiKey Passkey Enabler displays some helpful device information, including: - AAGUID - FIDO2 PIN status (Set, Not set) - Supported interfaces (USB, NFC) An AAGUID is a unique 128-bit identifier indicating your authenticator (security key) model. This information can be useful for debugging, as some relying parties restrict which authenticators can be used by AAGUID. For a list of YubiKey AAGUIDs and their corresponding models, see `YubiKey hardware FIDO2 AAGUIDS `_. If you do not have a FIDO2 PIN set on your security key yet, the YubiKey Passkey Enabler will guide you through the PIN creation process when registering your first passkey. As for the interfaces information, this indicates which interfaces your security key is capable of communicating over, which is helpful for confirming that your security key is NFC-capable. Note that this does not indicate which interfaces are *enabled* on your security key. With the YubiKey, you can disable USB and/or NFC communication for the FIDO2 application. If you try to connect/scan your YubiKey over a disabled FIDO2 interface, you will not be able to view this device information in the YubiKey Passkey Enabler nor will you be able to perform any FIDO2 operations over that interface. Thankfully, enabling/disabling FIDO2 interfaces can be easily accomplished via the Yubico Authenticator app. See `Toggle YubiKey applications on/off `_ for more details. .. image:: /graphics/device-info.jpg :width: 400 .. include:: /includes/includes-ccid.rst Yubico Authenticator -------------------- If you have a YubiKey and want to check additional device information, such as product name, serial number, firmware version, enabled/disabled interfaces, FIDO2 PIN retries remaining, and passkey credential details, we recommend using the Yubico Authenticator for Android application. You can download the app via the Google Play Store by following the link at the bottom of the YubiKey Passkey Enabler's home screen. For information on how to use Yubico Authenticator, see the `Yubico Authenticator User Guide `_. .. _using-the-app-nfc-sensor: Locating your device's NFC sensor ================================= Unsure of where to tap your security key on your Android device to scan via NFC? On the home screen of the YubiKey Passkey Enabler, click **Where do I tap?** If your Android device provides information about its NFC components to the app, an icon will appear on screen indicating the location of your device's NFC antenna. To effectively transfer data between your security key and your Android device during passkey registration and authentication, tap and hold your key as close to this location as possible. .. image:: /graphics/nfc-location.jpg :width: 400 If your Android device **does not** provide information about its NFC components to the app, you can still find the approximate location of the antenna during a FIDO2 operation by placing the security key against the back of the device and sliding it around until the app indicates that the operation has progressed to the next step.