Thanks for ordering a YubiKey with your SSL.com Signing Certificate. In order to use your Yubikey for signing, please follow the instructions below.

1. Activate your YubiKey to acquire your PIN and PUK which you will need for signing. Please refer to this guide: Access Your YubiKey FIPS PIN and PUK
2. Install YubiKey Manager. This application provides an interface to let you know if your Yubikey can be detected by your computer. The Yubikey Manager download package will also include the ykman Command Line Interface (CLI).   
3. You may also need to install the YubiKey mini-driver in order for the computer to pick up on the certificate.
4. Open YubiKey Manager. If the application displays the serial number of your YubiKey, this means your token is successfully detected by your computer and you are now ready to sign!
5.  Depending on your certificate, refer to the following specific signing guides: 
   1. Code Signing 
      • Using Your Code Signing Certificate
   2. Document Signing
      • Digitally Signing Microsoft Office 365 Documents using a USB Token
      • Digtally Sign a PDF in Adobe Acrobat Reader using a YubiKey