I wonder if there's a way to programmatically re-generate the one-time-use codes. It might be a fun project to set something up that emails a one-time-use code to my work email and then regenerates one.
What kind of industry do you work in that allows unfettered access to the internet but doesn't allow you to have a phone? Seems backwards...
There's a massive amount of websites that are blocked, so it's not really what I would call 'unfettered.' The reason that phones aren't allowed is related to the fact that they have cameras / microphones. They don't want someone's infected phone spilling company secrets.