In my continuing journey into become an expert on “smart guns” I offer you this report from the National Institute of Justice (original document here). I’ve read the first 25 pages of the nearly 100 page document (with 10 pages of footnotes).
The title is “A Review of Gun Safety Technologies”. I haven’t found anything really new to me in it yet. And there is certainly no technology that I would be comfortable having a government mandate even if I didn’t have some strong free market principles to overcome.