Neat concept, dunno how well it would work in real life. I can’t imagine the electronics and water would be that much of an issue as there are already IR sensor taps that must have some sort of electricity (unless maybe battery, not sure how they work).
Personally, I don’t like air dryers of any kind. I like at least having the option of a paper towel as I also often wash my head (no hair- head gets oily). Not to mention if I spill something paper towel can be really useful.
The dyson dryers also for me always seem like I’m playing a game of “how can I not touch the sides”…
R