Reducing the traditional ten-button numeric keypad for entering your access code can be simplified for law enforcement use by removing nine of the buttons.

Unfortunately, this LE optimization also eases the effort required by the burglars.

Or requiring WEP encryption.

Or requiring that all passkeys be registered, and all be stored on an LE database, and where a nefarious user can capture hundreds or thousands of keys...

Lets say that there are some licensed specialists who have tools that enable them to open your car door when you have locked your keys in it. These tools are illegal for anyone but the specialists to own or carry. That legal nicety isn't sufficient protection against thieves using the same tools as the specialist.