- 24,636
- Anoka, MN
I have not seen evidence of this.
And you never will, because you can't record something that never happened. For instance, I can't prove that locking my doors has prevented unwanted people from accessing my property since as far as I know, nobody has tried and if they have, it's not like they are going to let me know about it.
The same can be said about any of the things you listed.
Having less cash in the register, advanced security system, bulletproof glass, Timeclock on safe, securityguard, securitydoors etc.
All those operate under the same premise as guns, making potential criminals feel it's not worth the effort of even attempting the crime. Criminals are lazy, they will go after the easiest target, it's why senior citizens are such a popular target for scams.