The simplest way to defeat many wrong doers is to have them believe they have limited or no chance of success or that even if they try, the gains are not worth the risk or the cost.
How many people break into Hell’s Angels Motorcycle clubs, no matter how many expensive motorcycles there are?
A strong Visual presence almost always sends a really strong message to would be’s. The vast majority of crime, especially theft, is opportunity based. When wrong doers see an easy target, either on impulse or with little planning, they take it. Well maintained, secure fences and gates immediately send a message, even more so, if they are automated. The next blatant message to deliver is highly visible CCTV cameras. The next step up are climb resistant and energised fences. They don’t just send a message, they tell everyone, not to even think about it. Their mindset will go straight to”If that’s security outside, what’s the security like inside?”
The greater the distance between fencing and buildings, the greater the deterrent.