Clear Inventory upon passing through a doorway/pressing a button

I'm looking for a plugin that will clear a player's inventory upon interacting with something in the physical (Minecraftian) world. I don't really care if it's a button, a lever, or just a door that's had a command used on it, but I'm looking for a way to ensure that a player enters an area with nothing in their inventory. A magic, item incinerating doorway would be ideal, but redstone mechanisms would work as well. Does this kind of feature already exist within a larger plugin, or would this need to be suggested? Is there another way to do this that might work?

 

PortalStick has this as a function, but that seems like a kludge to install it just for that.

 

Unfortunate, it does exactly what I need but comes with all that other stuff. At least I know it's possible though. Thanks for the quick reply!