Yubikeys and Cryptocards ("tokens")

Yubikeys (aka "tokens") are used for accessing CISL computers and VPN. For instructions:
https://www2.cisl.ucar.edu/docs/yubikeys

A Cryptocard is a token device that allows one to generate a one-time password. A one-time password is necessary to access the CISL supercomputers. Cryptocards are being phased out in favor of Yubikeys. Instructions on using your Cryptocard can be found at CISL cryptocard instructions.