Disney's themeparks will soon use a high-tech system to instantly scan children's height with ultrasound to reduce arguments and disappointments on the the You Must Be This Tall rides.
Starting in early 2002, children will be scanned with a high-tech ultrasound device that will instantly measure their height. The device works by bouncing a beam from a paddle placed atop a child's head down to his or her feet, then lights up yellow, blue, green or white to indicate height range and ride eligibility. Children are then given corresponding colored wristbands indicating which attractions are safe for them to ride.
