> For the complete documentation index, see [llms.txt](https://yubico.gitbook.io/yubikey5/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yubico.gitbook.io/yubikey5/piv-1/getting-started/1.-interface.md).

# 1. Interface

## <mark style="color:red;">❊ Enabling PIV</mark>

To see if PIV is enabled on a Yubikey, download the [Yubikey Manager](https://www.yubico.com/support/download/yubikey-manager/) software.

Once the software is installed, launch the application.

At the top of the menu, select <mark style="color:red;">**Interfaces**</mark>**.**

<figure><img src="https://4238369593-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fqj0swE9RiXnBGKcxMY3V%2Fuploads%2FZbjyq4ypcCjhs89alnoz%2Fpiv_interfacesi.png?alt=media&amp;token=ba178093-6913-4492-ad63-3227ba191930" alt=""><figcaption></figcaption></figure>

There are two categories in the above image: <mark style="color:blue;">**USB**</mark> and <mark style="color:blue;">**NFC**</mark>.

| Type                                    | Description                                                                                                                     |
| --------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------- |
| <mark style="color:red;">**USB**</mark> | The modules checked will be enabled on your yubikey when you physically plug your yubikey into a USB port.                      |
| <mark style="color:red;">**NFC**</mark> | The modules checked on the right side will be enabled when you tab your yubikey against a NFC enabled cell phone or NFC device. |

Ensure that the module PIV is indeed checked for the side you wish to utilize. You can enable both USB and NFC if you are unsure.

## <mark style="color:red;">❊ PIV Interface</mark>

Once you have confirmed that your PIV module is enabled on your Yubikey, go back to the top of the menu, select <mark style="color:red;">**Applications**</mark> and then <mark style="color:red;">**PIV**</mark>.

<figure><img src="https://4238369593-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fqj0swE9RiXnBGKcxMY3V%2Fuploads%2FxfZotkxSYfMwF3cRDLIY%2Fanim_piv.gif?alt=media&amp;token=645b71fd-e07f-4b8d-a6c9-3c73c075ab4d" alt=""><figcaption></figcaption></figure>

You will be taken to the main <mark style="color:red;">**PIV interface**</mark> page which displays the following:

<figure><img src="https://4238369593-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fqj0swE9RiXnBGKcxMY3V%2Fuploads%2F8Powu3HgPWAxsBqU7O9H%2Fpiv_home.png?alt=media&amp;token=263ab72f-e51e-4e2f-83c7-83934396d440" alt=""><figcaption></figcaption></figure>

### [<mark style="color:blue;">Pin Management</mark>](broken://pages/sXN3vB88sWHpjmpcfxFC)

This is where you can set / modify the PINs associated to the PIV module. When performing actions such as signing a file / document, or logging into Bitlocker, you will be asked for a PIN. This is the PIN you must give. [**Click here to see the default PINs and what they do.**](broken://pages/sXN3vB88sWHpjmpcfxFC)

### [<mark style="color:blue;">Certificates</mark>](broken://pages/36C7XQp9vTEBKqXhzc92)

This is where your PIV certificates will be stored.

### <mark style="color:blue;">Reset</mark>

This allows you to completely reset the PIV module. ALL certificates you have installed will be removed, and your PINs will be reset. It will be like you just purchased a yubikey for the first time.