Originally posted here by MsMittens
Unless you are dressed as a Brinks guard or some other "official looking security guard" (not the Rent-a-Cop specials but the big ones). Social engineering tied with this could go a long way.
Well, that would work to an extent in that it would fool customers, but where I live it wouldn't fool everyone because the security guards are known to each other and to the shop workers so anyone dressed in a security uniform who wasn't recognised would be suspicious to say the least. It could be very effective in anywhere open to the public that isn't enclosed though.