Password plugin: possible to login via GET variable?

I'm using the password plugin module for "psychological" security (it's an album of photos for the family, want that barrier of entering a password). It's nice to have just the password instead of using the normal authentication to create a user + password pair.

I'd like to also have an RSS feed of this album - but of course the password protection bars a single URL solution for external programs. Specifically, I want to code a custom screensaver that would use the feed to download photos from the "protected" album.

Is it possible to pass the password via the URL as a GET variable, so that the password plugin authenticates for non-browser based apps?

(Hope that I'm posted in the correct forum...)