Multiple Computer Usage

I have a desk workstation and a travel laptop that I use for fieldwork and would like to be able to have the software installed so I can use it on both. This would not be a simultaneous use, but only one at a time. What options do I have for licensing?

Re: Multiple Computer Usage

I'm running PE Plus 9.0 and this allows me to install on 2 computers.
I have one on my Desktop and one on my laptop for client meetings with no need to transfer licenses.

Looking at the store I see that 9.2 PE appears to offer the same functionality as the following appears on both store pages:
"Perpetual 1 User license running 2 Systems"