Adobe Air and maintaining session state

OK, here’s a short run down. I’m working on an Air app per client request. It’s a tight time frame so I’m going the HTML/JavaScript route since that is what I know. I’ve only been digging into this for a couple of days, read a handful of tutes and articles but I just haven’t found this yet.

What are some methods for maintaining some session-like variables throughout the app (since it will have multiple html “pages”)?

I’ve seen where some are using an encrypted local store, not sure I really want to do that as this app will be in a public place. I suppose I could use an encrypted querystring - not sure of the implications there. What else is there?