Crow, I've been wondering if a cop needs probable cause to use the meth gun in the first place. Can a cop perform such a specifically targeted test for meth without probable cause?
If a cop needs probable cause, then can't the same probable cause allow them to perform a standard search for possession?
How often will the meth gun find trace evidence where a standard search yields nothing?
Will trace evidence hold up in court or will it serve only to justify a search warrant?