I for one don't have a problem with that but it
would be easy (prehaps too
easy) for the system to be abused or be modified to be invasive to law
abiding citizens.
Exactly. LEOs are people too, and a percentage of them are bad people. Some
are good people doing things badly. Consider the Santa Cruz police
department illegally scanning all cellular phone traffic in a area where
they believed protest organizers _might_ be using cell phones to
co-ordinate. Never mind that you need a court order to listen in on
someone's phone call. Ref: San Jose Mercury news.
If you believe an honest citizen (or police officer) is someone who hasn't
yet had a big enough temptation to become a criminal, then opening up a
free candy store (as things like Carnivore are) in front of them is just
plain bad policy.
--Chuck