Really cool hunt 
Pros:
- Really small robot so others won't see it, can hide it anywhere
- As a fun gadget it can even greet you and say some words
- It has facial recognition, you can save friends and family, only alerts you if you didn't save him as safe
- Has same security level as the military, makes it almost not hackable
Cons:
- None for this, the price is also really good, only costs 160$
RE: Koova - The smallest smart security robot