Abstract: Methods for controlling admission to amusement park rides include electronically measuring each child's height (and optionally weight) and comparing the measured data to a database which specifies minimum requirements for each ride in the amusement park. Upon completing the comparison, several optional steps are provided including encoding a data carrier with the child's measured data and/or a list of rides which are appropriate for the child. The data carrier may be a “swipe card” or other machine readable device which must be presented at the entrance to each ride. The entrance to each ride is provided with an electronic entry control gate which is operated by the data carrier. Optionally, a list of appropriate rides is printed for the child and/or the child's parents. Apparatus for performing the methods are also disclosed.