My family visited Hersheypark in PA a year back and there is a system for height requirements that I'd never seen before.
Basically it works like this:
You are measured before entering the park, and depending on what height you measure up to (different candy bars in Hershey's case ) you wear a different wristband. Then you will know exactly which attractions you can ride based on the labeled colors/candy bars/Disney characters if Disney were to impement it.
I would really like to see this become an option (key word) for children visiting DLR. I do not see this working if 10-20 thousand children are forced to be fitted with plastic bands stapled on their limbs immediately upon entry of the park. In other words, it could play second fiddle to the standard approach-the-attraction-and-then-see-if-you-measure-up system.
The reason my mom and I want this system is because my sister is on the borderline of 46 inches and loves CA Screamin'. But depending on which CM is checking her height, she may or may not be allowed to ride, and the end result can be disappointing We understand the discrepancy with height stuff, but if she can get a wristband we can end the dispute once and for all!