Keys also enable people to open locks without force. Drive a different vehicle or take public transportation.
Yes, but how do the perps know what key formula to use? There are sophisticated lock-picking devices on the market which are available in disgusting places like “Spy Shops,” where you can also buy “useful” things like books on how to harass people, how to bug people’s homes, even how to poison people. Such publications are not what the Founding Fathers had in mind as protected free speech.