[avg_freeper]

If they could do this with dogs couldn't they do this with any remote detection scheme. They could use chemical sniffers, X-ray machines the whole shebang!

The only differences between this and an outright search are arbitrary.

[Arkinsaw]

If they could do this with dogs couldn't they do this with any remote detection scheme. They could use chemical sniffers, X-ray machines the whole shebang!

I don't think they can do X-Ray machines because it requires an intrusion of particles on their part. But they can do heat, light, etc. because heat for example comes out of your body and home on its own and becomes open game. Sort of like garbage on the curb is abandoned property. Your heat signatures are essentially abandoned property.

[NavVet]

Big difference between odor detectors, which they use in every airport, and an x-ray machine that would look into your house. You really need to read up on the 4th amendment, before you start talking about big brother coming to get you.