-fingerprints: because if the system fails, you have no gun. Internal malfunction? Greasy finger(s)? Gloves? Dirt? Dust? People whose fingerprints are really hard to print?
- determjne how often/when they are taken out of the house: talking specifically about the USA, that is a gross over-reach of the government (local + federal) via registration. A central database with who has what gun at what time? I'm against it.
I hope I can inspire you to look-up some additional information. Responsible gun owners are not a problem. The FBI has statistics on "defensive gun use", reporting that it happens over 250,000 times per year. Compared to what number? 35-40,000 deaths per year involving guns? And of those, 20-30,000 are suicides.
Please look up hard-data. Trying to take away guns will not solve the issues society faces. Then why do it?