After further cogitation, and a lot of reading, I'll follow-up on my own question. It turns out Stephan.J has already solved this problem ... How to make a password protected tile to disarm HSM, (but you could make it do anything you desire).
So the instructions are a little cryptic for noobs like me ... but they do work. If you are looking for noob instructions, please contact me directly. Otherwise, see Guide on How to Create a Password Protected Tile
