Similarly, SeaWorld San Diego started requiring annual passport holders to scan their entire palm each visit for more than a year now. A mechanism at each entrance turnstile scans the shape and formation of your palm. It's rather inconvenient, but this is also the same place where the annual passport is printed on
cardstock, just like the regular one-day ticket. A "water"-themed park where you can and do get wet in several shows and rides should print annual passports on plastic, but I guess they can save more money this way.
