Yserb
I strongly strongly recommend you speak with people from the gun community. You will find that a lot of your points just represent a simple misunderstanding. Police training in firearms is actually quite limited. Police accuracy and shooting is quite poor. If there is a home invasion. You are going to need a lot more than five rounds because you will be freaking out. If there is a home invasion with three or four invaders, you will definitely want to have more fire power. Magazines last nearly forever. The bad guys will have magazines capable of carrying lots of rounds. You should at least have the same. In terms of guns that require electronic identification to function there is no one serious about guns who considers that to be safe in any way. If there is a home invasion, what is the chance that it works? What if the battery is dead? have you ever tried to open your iPhone with your thumb when you’re sweating or when your thumb is otherwise wet? It doesn’t work. No one serious about self-defense would use a tool where he has no idea if it will be functional should the situation arise.
I strongly recommend taking at least a handgun training course from a good instructor. If you have the means, I strongly recommend you go to Gunsite in Paulden Arizona. You will have a completely different idea of your responsibility to protect your family and the tools necessary to be able to provide this critical need for your family.