I disagree, I don't find this as an intrusion when the dogs are merely exercising their abilities. There is no prior intrusion into your wallet, personal search, etc. There has to be some way to run a police operation without giving EVERY advantage to the perps.
If the K-9 officer makes a routine traffic stop, Rin Tin Police Puppy ought to stay locked in the patrol vehicle.
And I despise the idea that the canine is a "police officer" as some states value the dog's life above that of a human being.
The dog is a tool just as a mechanical sniffer would be,although the reason-impaired might balk at the idea of a police officer sniffing the car mechanically . That also brings up the "sniffing" flashlight,which is another bad ruling. Devices can be made so sensitive that they will alarm on perfume and aftershave alcohol odors,thereby giving "cause" for search and further testing. If a human in average health can't see or smell the suspected substance while STANDING out side the open window ,the a search warrant ought to be required. The courts have been trashing our rights for years, and made us less,not more safe.