Step 4: Test, Deploy
In most cases you should be able to use your new device right alongside your "normal" keyboard, as long as you've got the ports (mine is USB, but a PS2 would work, too).
If the test is successful, package it up and call it complete!
I glued an F1 key to my device (from the donor keyboard, of course), and even though it will be stashed away inside my kiosk and never be seen, I like the idea that the F1 key is in there, silently advertising its silly purpose...
Thanks for reading!