Touchstone-specific Exhibition Mode apps (webOS 3.x)
This tip is only for HP TouchPads running webOS 3.0 or higher
webOS 2.1 on phones introduced Exhibition mode to replace the standard lock screen when your phone is on the touchstone charger, providing a unique interactive experience for the user while the phone was still charging. This feature was carried over to the TouchPad and webOS 3.0, even though the phone touchstones were not compatible with the TouchPad and required you to purchase a TouchPad-specific touchstone. And if you have multiple TouchPad touchstones, you can even specify which Exhibition app you want to launch for each touchstone.
Once you put the TouchPad on the first touchstone, just select the Exhibition app that you want to run. When you move the TouchPad to a second touchstone you will notice that it loads up the stock clock exhibition app and not the previously selected Exhibition App, requiring you to choose the Exhibition app you want to run on this touchstone. Once you make that selection, you can move back and forth between touchstones and the TouchPad will remember which app was running on the each touchstone charger.