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.
“In practice there is no difference between a trigger lock and locking the entire gun in a box.”
Absolutely correct. However, you should read the opinion. In DC, the gun had to be disassembled or locked. In either case, it was not readily available for defensive use. In this case, the gun could be disassembled, locked, or in the possession of the owner. The court found that “being in the possession of the owner” did not make the gun unavailable for defensive use. So there is a difference between the cases.
Now, I agree with you that the court should not have ruled as it did. But, that is not the same thing as saying there was no differences in the case.