There was something else you said this morning that caused me concern.
We talked earlier about the best use. We've heard testimony that the best use is to place the device six inches or less from the driver's mouth. You said today that two inches would be more appropriate to be useful.
If it's two inches, that would appear to be very invasive vis-à-vis the driver of a car. If you're that close, say two inches away.... The police officer stops you at the side of the road, and in order to be effective, the officer has to put this device almost inside the car. That much proximity to the driver's mouth sounds like it could be very invasive, in practical terms.