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To use them, insert the yubikey into an easily accessible USB port so that the circular depression on one side can be touched.
Bring up a command prompt on the computer and type in:
ssh arcc-t<##>@beartooth.uwyo.edu<ret>For example:
ssh arcc-t01@beartooth.uwyo.edu<ret>Enter password that you were provided when you picked up the yubikeys followed by a comma, then touch the depression on the yubikey. Yes, actually touch the flashing circle on the yubikey.
For example: <password>,<touch-the-yubikey>
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