It seems a Chinese power utility has developed a flame-throwing drone to combat trash on transmission lines. You can read about it here, in English. Here's a Chinese TV report.
Can you imagine the fun if you could incorporate something like this into a home security system?
- Trash jumps over back fence to break into your house.
- Trash is incinerated before he can make entry.
- Wash, rinse, repeat.
I think that might sell like hot cakes. There really would be a 'Hot time in the old town tonight'!