Not only biometric, but the 'ring' guns too- like the O'dwyer idea?

I can see some bobo taking off his ring or switching it to the other hand.

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The cosmetic thing is a joke too.

I was watching a special on violence and guns when NFL players are involved.
Some idiot gun dealer was showing his wares off to the reporter doing the interview..

He had a huge revolver with a scope mounted on it that was as long as the whole gun. The reporter asked him about the scope - apparently he had some knowledge about firearms and how stupid and useless it was on any handgun - the dealer laughed and told him that it was the gun that the players asked about the most.