[fdr]

The professor did gloss over briefly the difficulty in making the system work for a large number of vehicles, before arriving at a viable "signature" idea, as the article describes. Sounds like an area with a lot of false starts (heh) and time consumption, and dead ends.

[dghlsakjg]

The professor should have seen that he could send a signature over the airwaves to his relay since that is even more universally compatible… plus, you can buy that exact device for about $20 at the online retailer of your choice.

[K0balt]

Vectorising the power profiles makes this a no brainier. I’ve done it, and I have no brain.