If you own a car and you find out that it has been scratched a number of times by someone frequently running a sharp tool all along the painted surface while you are at work or as well thieving parts from it at night while you are sleeping in that case you can utilize hidden cameras.
The lone drawback to using an outdoor security camera this way is that it will pick up more action than you would like to look at. Nowadays you can document their every action even as you are gone and expose if they actually are having parties or if they are behaving right. You will nevertheless expose what is going on at night close to your car.