The video is funny, but I have mixed feelings. I love cats.
I too have a motion sensor deploy to detect cats but for entirely different reasons.
Some years back, during my daily walk and about half a mile from my house, I noticed the same black cat resting by a particular storm drain everyday. I stopped to say hello whenever I walked by. At one time, the neighbor noticed I was talking to the cat and she told me "one day, they moved (pointing at a door), and they left the cat behind." So, every day, I talk to that cat whenever I see him.
A year or so later, after a very cold week, I saw the same black cat looking for something to eat near my house. Since then, I have put cat food outside. This black cat is not my only customer. One cat probably 3 years old now was lost as a kitten, she appears to depend on me.
After a particular snow storm, I wanted to know if the cats are okay. Rather than something elebrate, I made something quick and dirty to photo whoever comes for dinner; with just the things I have laying around: I have a laptop with a USB-cam taking timelaspe photo. The laptop is connected to an Ardunio with a PIR. If the PIR is un-triggered, the laptop gets rid of the photos taken. If PIR is triggered, it moves the photo to a "for-review folder". The Arduino also beeps an alarm and turns on the light for the camera.
I know all my four cats survived the last winter. Oh, the original black cat that started all this: it ends very well for him. Last few times he was photographed, he was wearing a collar - that means someone adopted him. Now that he has a home, he is not around as much but he still drops by to see what I was serving for dinner.