I understand that. This is one of the tools, as you say, to establish reasonable grounds to suspect that the person has alcohol in their system—to put them on the ASD, the alert, in order to then determine whether there's reasonable and probable grounds, and then give them the Breathalyzer. I understand there are steps along the way here.
With regard to its utility, I'm assuming you would envision this being used at police checkpoints to screen for drinking and driving. Is that right?