Agreed. But we are where we are now and have to face reality. The reality is, the political situation with guns is, and has been, stuck between a rock and a hard place. I want to keep those political arguments out of this thread and focus on how tech can help.

I think politically, you can get every side to agree that if technology could alert authorities that somebody is holding a gun in hand and walking up to the entrance of a retail store, it would be an improvement and can potentially save lives.

but yes, I agree with each of your bullet points. All three of those will have benefits far beyond solving gun violence as well.