We sadly aren't using it because we don't have any spotlights in the show. We got it working for the first rehearsal but we found we didn't need it. I think the best part was figuring it out more then using it.
One of our other ideas was to name it Free internet-talk to tech crew or something. When they asked us for it, we would give them a form with prompts for their credit card number, social security number, address, and other things.
Could also finance some other things as well. Until people get those calls from their banks and realize some there are some unexplained charges on their statements.