Has anyone out there ever used one of those child monitor systems in WDW? Saw an ad for "Angel Alert" and remembered the time I lost track of my 4 year old in the Lego playground at DD. It was only for a couple of seconds, but I don't ever want to feel that way again! Seems like some of the systems out there alarm when child gets too far away, and others you can push a button when you don't see the child and his monitor will go off. I am probably just being paranoid, but it's a really scary world out there, and I bet Disney would be a kidnapper's dream. ( I also wondered if two systems cross paths, would the alarms go off at some point because of that?) So much to worry about being a parent of 2 very curious active boys!! Thanks for the info!