How is the possibility of using listening devices near the border "conspiratorial"? There are many ways to accomplish this using publicly available technology. Using the C word to dismiss a conversation prevents us from having a legitimate discussion about whether something is appropriate.
Just considering the possibility isn't too conspiracy theory-ish, but considering it based solely on a single anecdote that could have alternate reasonable explanations (for example, a guard actually was near the car and they just didn't notice) is a little ridiculous, especially when there clearly is a serious issue to be discussed here.
They wouldn't need to be in people's cars. You could just bounce a laser off the car windshield to hear what's going on inside.
This strikes me as a great tactic, as I can imagine people that are preparing to lie to the authorities may be corroborating their story as they approach the gate.
What surprises me is that the border patrol officer would tip this hand over such a minor thing.
Ok that's pretty damn cool, I didn't know that was possible. But the car vibrations might still be too much noise, and I don't know if it's possible to automatically remove the noise like that.
