In the USA, a funny incident happened with a developer from Georgia who has a smart home system from Nest .
When a stranger is detected at the front door, the system blocks it and takes a photo of the person.
Actually when the developer came home, the system identified him as a stranger. After that, he went to the application to see the photo of the “stranger”.
And there he saw a photo of Batman from his T-shirt!
The developer still got home by entering a pin code in the application, but noted the vigilance of the system.