Not an issue if you're storing it properly. Even if you have biometrics it should still be stored properly to prevent theft.
"or an attacker overpowering you and shooting you with your own gun"
Gear is no replacement for training. Even if they can't shoot you with it, you have much larger problems if they can overpower and disarm you. It won't stop them from bludgeoning you to death with, etc.
"Also you don't have to worry about someone stealing the gun and committing crimes with it (maybe it can be hacked, but probably not by the typical home invader!)."
That's not really how criminal systems work. Usually your common criminals are selling the stuff they steal on the black market. You have specialized shops (organized crime) who buy stuff like this (guns, phones, computers, etc) and can hack it and resell it.
It's an interesting concept, but it will likely take a lot of testing. "Well-designed" is a matter of opinion, and not everyone shares that view.
Fun fact: you only get bludgeoned to death _because_ you own guns. In most of the civilized world, people do not get assaulted in their own home by thieves. Thieves see that you're awake, run away because handling the police is more trouble than it's worth, done.
Citations needed.
What distinguishes how intruders will react? When intruders are in your home, how do you know it is burglary versus home invasion, sexual assualt, kidnapping, etc. ?
>> In most of the civilized world, people do not get assaulted in their own home by thieves.
What defines "the civilized world"?
In many parts of South America and Central America criminals will kill victims and witnesses so that no one will be able to identify them or testify against them. How do you know what intruders will or will not do?
>> Thieves see that you're awake, run away because handling the police is more trouble than it's worth, done.
Depends on the intruders (how do you know they are thieves?), depends on the police, depends on the speed of police response.
If the intruders can stop you from calling the police and you are not a significant threat, why would they run away?
And soon enough, even your kids would learn how to hack it (if not before: kids really like figuring out stuff they are not supposed to do!).
I don't own a gun either (though I shot one in a shooting range twice), but if I was ever worried I'd need to defend myself with guns, I'd probably stockpile on live rounds instead of guns: in a case where people would need to rise to arms, I figure rounds will quickly become more valuable and could be easily exchanged for a gun with someone without any rounds.
If biometric-auth guns were pervasive yet hackable, petty criminals will likely have a way to easily sell them off to someone better equipped to hack them. I was mostly countering whether biometric auth would stop them feom being used for crimes after getting stolen.
How would a kid get the firearm? Are firearm owners/parents elsewhere so irresponsible that they leave firearms lying around unsecured?
Insane proposition IMO.
I know you're not arguing otherwise, but this never happens, and it's one of those annoying arguments that anti-gun people use to justify banning and confiscation.