His real name is Harry Barnes. In short, Mr. Barnes was accused of storing prohibited guns (some of them automatic with bolt carriers not removed) in locked metal cabinets in essence school lockers which according to the prosecution were not "safes" (COURT FILE No.: Toronto Metro North Courthouse DATE: 2011·06·24 Citation: R. v. Barnes, 2011 ONCJ 419). A defence expert testified that defendant's gun lockers were, indeed, safes according to a definition of a safe as a "strong container, usually of metal, and provided with a secure lock for storing valuables". Eventually, Mr. Barnes was found not guilty. Sadly, Mr. Barnes passed away in 2016 in Toronto.
P.S. I guess that a word of caution must be added to the verdict R. v. Barnes that a locked metal cabinet is a safe. Even in Ontario any other judge could arrive at an opposite verdict. So far, it has not happened but who knows. I also noticed that the OP is from BC. In this context, the verdict R. v. Barnes from an Ontario judge is not valid for BC, i.e. a judge in BC could present a completely different interpretation what constitutes a safe and what does not. The problem is that word “safe” is not defined in the Storage, Display, Transportation and Handling of Firearms by Individuals Regulations, the Firearms Act or in the Criminal Code.
All in all, I would be on a safe side and put trigger locks on handguns. Personally, that’s what I do.