Again, it's a question of priority.
I think this was raised previously. How do you balance interdiction measures with rehabilitation and harm reduction? My view is that, upon admission, the bulk of the prison population requires some substance abuse treatment. When we spend the amount of money that we are spending on corrections, we should have state-of-the-art treatment right from the beginning and sustained throughout the incarceration. We should spend more money on treatment than we are on the latest gadget that may or may not prevent drugs from coming in.