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You walk up to the entrance at Disneyland or Disney California Adventure, tickets in hand, kids already pulling you forward. You scan in, and for a split second, a camera looks right back at you. It happens so fast you barely notice.

For most people, it feels no different than tapping a phone or scanning a ticket. Just another step to get inside. But that quick moment is doing more than you might think.

Facial recognition is now part of the experience at Disney parks. You probably just keep moving. Most of us do.…