I guess my point for posting this was (and I do agree with everything you guys have responded with as well):

Think about this...you get pulled over, cops claim "You are impaired." They scan you for residue and BAM, they have authority to search and arrest you for "intoxication". Cops drive by your house after a nosy neighbor claims unlawful activities. They do a quick scan of you when you answer the door, bam, busted.
Zohar Reviewed by Zohar on . Woah, real scary article! NORML.ORG UK: Drug Scanner Checks Public YIKES! I don't think I even need to explain why this is downright frightening. Rating: 5