It’s true that security signs will deter intrusions in Boulder
Numerous studies indicate that security signs are effective when considering how to deter an intrusion. The logical explanation is that the prowler will see the display and quickly decide that your home is a poor choice to target. After all, why stress over cameras and motion detectors when a thief can hit a less protected house in another neighborhood?
With that being said, the same studies note that signage isn’t the most intimidating deterrent to crime. A wisely situated sign mainly dissuades less experienced prowlers, but professional thieves may want to find the extent of security that is actually protecting your property prior to moving on. Other components, like security cameras, do a much better job thwarting prospective invaders.