Disney could soon use new technology to keep track of visitors inside its parks by scanning their feet.

According to a patent filed earlier this month, a machine would take a picture of guests’ feet and gather information about them, including the rides they go on while at the park.

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A U.S. patent document said that the system and method using foot recognition is to “create a customized guest experience.”

There's no word on when the technology will be used.

You can view the patent issued by the United States Patent and Trademark Office here.