MUCH easier simply to keep the Muzzies out.
They won’t need this at Tokyo Disneyland.
Agreed. Tokyo Disneyland and Disney Sea are pretty awesome and always safe (except when some of the quirky and backwards Chinese tourists go barging through all lines and crowds like they don’t exist). But it appears this is a technology to help track guests at the park during a day trip by using the appearance of the shoes and feet as the metric to match to a Disney hotel guest, for example.