> 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/gpg/getting-started/1.-interface.md).

# 1. Interface

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

To see if GPG / PGP 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://4134239767-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwDiMyl2FV0YbzWbcTioq%2Fuploads%2FWbWft5iWi2yqgoqYky5M%2Fpiv_interfacesi.png?alt=media&amp;token=964aefeb-7fd9-4017-ae42-3c812eac66d0" 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 **OpenPGP** module 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;">❊ Interface</mark>

Unlike PIV, the GPG module does not have an accessible interface from the Yubikey Manager software itself.

You can manage GPG keys from the command-line, or from programs like Kleopatra which allow you to manage the GPG aspect of your Yubikey / smartcard.

If you wish to use a program with an actual interface, you can try Kleopatra by installing [**Gpg4Win**](https://www.gpg4win.org/)**.**

[**For MacOS users, please take a look at this list of alternatives**](https://tipsforefficiency.com/kleopatra-for-mac/) since Kleopatra is limited to Windows and Linux only.