Spy Cell Phone Recorder I Need To Make Some Spy Gadgets That I Can Record What People Are Doing In The Neighborhood?

I need to make some spy gadgets that I can record what people are doing in the neighborhood? - spy cell phone recorder

There are young people in the neighborhood, have caused the problems and horrible things for adults to say, 1 example of my mother! Sign up locals with my phone, but I think it would be too obvious and could smash: O.

They have ideas and a spy device could do cheaply?

PS: My phone is an audio recorder, and the police are gone, but they do not occur