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Re:Investigating why McDonald's ice cream machines are often... by slantyyz on Monday April 26, 2021 @10:24AM (#26942815)
The video is not a complete story.

I suggest you read the Wired article that came out a few days ago, as it addresses a lot of the questions being asked here.

https://www.wired.com/story/they-hacked-mcdonalds-ice-cream-...

It should be worth noting that the story in this video and the Wired article appears to have been initiated by the creators of the Kytch.

Re:Investigating why McDonald's ice cream machines are often... by LorenPechtel on Monday April 26, 2021 @01:04PM (#26944963)
And note that the very existence of the Kytch says there's a big problem with the UI of the machines.