That’s how we log into and lock our computers where I work (a US Air Force base). To my knowledge, that’s the standard way of operating for most DoD NIPRNet computers. If our heads-up-their-asses IT folks have deployed it, the system can’t be all that slick.
I have a card reader on my personal laptop so I can log into my work webmail from home or on the road. I don’t care to take a work laptop when I travel because I can’t do anything fun with it. And by fun, I mean porn.