Studies show security signs can deter intrusions in Detroit
Numerous studies say security signs are a good idea when attempting to deter an intrusion. The reasoning is that the prowler will discover the signage and instantly decide that your property isn't worth the hassle. After all, why get concerned about surveillance systems and motion detectors when they can pivot to a less protected home in another neighborhood?
With that being said, the same research indicates that a security sign isn’t the strongest deterrent to crime. A well-placed sign mainly discourages amateur thieves, but veteran criminals may want to see how much security is truly protecting your house before deciding on a different target. Other devices, like cameras, are more effective at keeping an intruder away.