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Thousands of people flock to Disney theme parks every day.

But there is a clever way that crowds are prevented from building up — although it might make some visitors feel uncomfortable.

Visitors to Disney theme parks can wear wristbands, called magic bands, which are used to gain access to the parks, as hotel room keys and to make payments at shops and restaurants.

According to a Disney super fan called The Mouselets on TikTok, each magic band contains a chip so when the band is placed on a touchpoint, such as a hotel room door, the chip will be read and the door will open.

Disney has placed sensors all over the park that pick up the number of magic bands in the vicinity, including in ride queues, so staff can see exactly how busy areas are getting.

That means staff can monitor where crowds are building and try to disperse them.

Until last year, magic bands were free for all Disney resort guests, but now they cost between $20 and $58, so if people don’t choose to buy them, the crowd monitoring isn’t as accurate.

TikTok user @themouselets shared a video explaining the different ways Disney stops crowds from forming.

She said: “This is the coolest thing that Disney can do with your magic band – they can actually perform crowd control.”

“Disney knows where you are at all times because your magic band has a tracker.”

“So, when a big crowd starts to form, Disney can be ahead of it. They actually have an entire team devoted to monitoring crowds.”

“When a big crowd forms, they’ll address the issue as quickly as possible by adding characters, opening up additional space in restaurants, and adjusting wait times and ride queues.”

The video has been watched 363,000 times, with viewers confirming that the bands don’t contain trackers, just sensors.

A former cast member commented: “They don’t have trackers… there are sensors in the queue that read magic bands when you pass them.”

“It helps with managing waiting times.”

Another person wrote: “Not really, it’s not a tracker. It has a chip that can be read if you’re in the general area of a reader.”

This article originally appeared on the Sun and was reproduced here with permission.