>I believe they only use it for detecting rough location of all visitors which is perfect to determine the lengths of lines at rides or to find where a lost kid

>I believe they only use it for detecting rough location of all visitors which is perfect to determine the lengths of lines at rides or to find where a lost kid is in the parks. Also, I imagine to determine if the guest is still in the park and if so which park, what part, or which restaurant, etc even if the guest is not swiping any RFID readers. I also think they probably have issues with people hiding in the park after closing and such and I'm sure this helps security find people who do this. Confused elderly person comes to mind as well. I wonder if this system extends to places like Downtown Disney or Disney Boardwalk and the hotels? Then it becomes a scary privacy issue when its just not theme park goer management, but something that extends beyond the theme park's gates. >This is perfect for knowing crowd density in an area and estimating line lengths for outdoor areas Accurate density metrics and tracking of crowds must be invaluable. I bet Disney sits on lots of interesting data. I wonder if people migrate to certain types of rides at certain parts of the day or which rides they ride first. Or how these changes when you have younger or older kids, etc. I also prefer wearing one of these than giving up my thumbprint, which is the current system. That's always made me nervous. I'm sure its stored forever in some database which is trivially tapped by other organizations.