The author should read the two cases.
In Heller, the court struck down provisions that required the gun to be fitted with a trigger lock or disassembled.
In the San Francisco case, the gun did not have to have a trigger lock or be disassembled if it was in the possession of the owner.
There is a significant difference between the two cases.
In practice there is no difference between a trigger lock and locking the entire gun in a box. In either case, Heller said that the gun would not be available for use when needed. The cases are not in the least different. They are identical. Just the puke SCOTUS let the Ninth Circus hijack the law.
Whatever. America is screwed.