A McDonald's worker has revealed the reason why cameras are installed at the drive-thru – and customers were gobsmacked.

Katie, 17, who posts on TikTok, @katieeclarkee, noted that the fast nutrient chain has CCTV installed all around the drive up department of the restaurant.

But they're not only there for security reasons, noted the Mirror.

Katie'southward clip shows that the cameras take a snap of you in your car when you gild.

That way the staff tin keep rail of multiple orders more hands.

Plenty of people didn't realise that the McDonald'southward workers would exist able to see into their car when going through the bulldoze-thru.

But, it ensures yous go the right munch at the right price.

Katie's video was viewed a whopping 6.3million times.

The cameras take a photo and attach it to your order

The cameras have a photo and attach it to your society

In the clip, she said: "Always wondered how McDonald's know whose auto is whose?"

"There is a camera and information technology takes a picture of y'all and your machine."

The teenager noted that orders are handed to the correct customer thanks to the useful camera.

When you drive upwards and club your meal, the cameras will take a snap of the automobile and link the image to the order.

Then, when the food is prepare the worker but has to check that it'south the correct auto.

Katie added: So perchance don't selection your nose when you lot guild … because we see information technology and we judge you."

The imaging helps staff to pair orders with the right customer

The imaging helps staff to pair orders with the right customer

In the comments people were diddled away by the information.

One person wrote: "Wow really? I had no thought at that place were cameras."

"Ayo that's some new new," added a sometime staff member. "Nosotros didn't accept that when I worked there last twelvemonth."

And, a third exclaimed: "Wait y'all see us?"

Other McDonald's workers besides noted that they tin hear everything you lot say in the machine from the moment you bulldoze up and activate the sensor.

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The sensor turns on the staff member's headset and gives them firsthand access to hearing what you lot're saying.

And then, exist polite…

One such worker said: "I'm waiting for the day they realise nosotros hear them the moment they pull upwards, to the moment they exit the speaker box."