I'm using PowerPoint 2007 to develop a basic touch screen information kiosk.

Users advance through the slides in a non-linear order, I've used hyperlinks
to other slides when they touch the screen.

I want my presentation to return the the first slide after a period of
inactivity. This means that if a user wanders off after getting the
information they need the presentation resets itself. I thought this would
be doable by using hidden slides for everything except my first slide and
then simply saying advance after a set period, thus advancing to the only
unhidden slide... This doesn't work the presentation simply continues through
the hidden slides.

Any ideas of how to solve this would be great.

TIA