This camera only takes a photograph when there is a dog in the frame. The presence of a dog is built into the rules for whether the camera can take a picture at all.
It is a creation by Matty Benedetto, who shares deliberately unnecessary inventions on his own site, Unnecessary Inventions.
Whether a photo gets taken is decided by the presence of a dog, not just the person holding the camera. It is as if the camera has its own favorite subject.
The Tragic Mouse is an iPhone case that also works as a functional computer mouse.
It was created by Matty Benedetto of Unnecessary Inventions, a maker who builds deliberately unnecessary products. The creator's official page lists the device as operational.
Your phone already does so much, but apparently its case also needed to become a computer mouse. Now your phone has another job on the desk.
Whether a photo gets taken is decided by the presence of a dog, not just the person holding the camera. It is as if the camera has its own favorite subject.