As always it is the human-modulated social questions that are hardest to deal with.
I suspect that car makers might be happy to design such systems into drivers seats and offer them as an optional safety feature that triggers an alarm.
Question is.... how will it be used and by whom? If it's just to alert the driver that they should take a rest, that's fine... but if it's going to be used to spy on people who depend on driving as a livelihood, that's a little creepy.
Blog Make a Frequency Plan Tom Burke 17 comments When designing a printed circuit board, you should develop a frequency plan, something that can be easily overlooked. A frequency plan should be one of your first steps ...