Neither of these are good ideas. The whole point of putting up cameras is so that anyone looking for cameras will see them. More than that, you want cameras that look like a security company put them up, not like you were afeared so you got an online peepshow off Amazon Prime. Even then it may not matter much; I've got two shots of perps walking right by my cameras, staring into the lenses, and then breaking into cars in the parking lot anyway. However, the cops like 'em. I've had them come and ask me for footage of the Subway across the street. "Sure, officer - I've got approximately thirteen pixels that just might be your guy. Where shall I email them?"
Fair. Makes the above ideas amount to the effectiveness of a 'Beware of Dog' sign. Cameras would be the lesser expense compared to a dog (edit: long term).The whole point of putting up cameras is so that anyone looking for cameras will see them. More than that, you want cameras that look like a security company put them up, not like you were afeared so you got an online peepshow off Amazon Prime.