Copy/paste the needed password from your workstation to a text file on a secure USB key, then use the key to copy/paste it into the login on the other workstation and delete the file.
> * remote-login from their workstation to mine to copy/paste (and hope their workstation's clipboard is secure)?
This option also risks leaving around credentials to remote-login to your workstation.
No sense worrying about the workstation's clipboard-security though- if the workstation itself is pwned or intentionally bugged, the password will be at risk from a keylogger or network-sniffing proxy when it's typed in anyway, so no avoiding that risk.
Option B is to ask yourself whether a 40-character impossible-to-write-down-without-typos password, phones are Not Secure level of security-paranoia is worth the tradeoff of inconvenience (it may be, depending on the nature of your work).
> * remote-login from their workstation to mine to copy/paste (and hope their workstation's clipboard is secure)?
This option also risks leaving around credentials to remote-login to your workstation.
No sense worrying about the workstation's clipboard-security though- if the workstation itself is pwned or intentionally bugged, the password will be at risk from a keylogger or network-sniffing proxy when it's typed in anyway, so no avoiding that risk.
Option B is to ask yourself whether a 40-character impossible-to-write-down-without-typos password, phones are Not Secure level of security-paranoia is worth the tradeoff of inconvenience (it may be, depending on the nature of your work).