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[–] clamhurt_legbeard 0 points 3 points (+3|-0) ago 

Plus this sensor is to see if vehicles are on a road, so it’s not really apples to apples.

How silly. Metal transmits vibration far better than dirt. They would have a much greater effectiveness when attached to metal.

without being detained

And while being recorded the whole time on video, in 2003.

The guy stopped before entering the restricted area. I'd be happy if all the illegals stopped without entering America. Would you call that ineffective, too?

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[–] heygeorge ago 

Of course the guy stopped. He wasn’t a professional smuggler. And I bet not a Mexican.

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[–] clamhurt_legbeard 0 points 1 point (+1|-0) ago 

No wonder they didn't arrest him.