As has been alluded to above, black bears don't have opposable thumbs. So coins and screwdrivers are going to be a little hard for them to operate
Bears in some areas have figured out how to defeat hanging, whether it's the PCT method or counterbalancing. Not sure about the ADK's, but definitely in some areas of the Sierra Nevada.
Some bear canisters that have never been compromised:
- Garcia (heavy)
- Bearikade (expensive, but light)
- Bare Boxer (contender model is nice for short solo trips)
These use coin/screwdriver locking mechanisms, unlike the Bear Vault.
Hanging a bear canister is a pretty silly idea.