Technological solutions like this work well in Japan because people there have a society that values politeness and not being a flaming asshole. I've read they're so polite there that they even switch off their headlights at red lights, so they don't bother the people waiting on the opposite side. Over here, people happily leave their mis-aimed high beams on and blind people who are waiting for the light to change.
Funny enough, the last time I was in Japan I asked my host why she kept turning her headlights off at red lights - it turns out it wasn't to be polite. It was because she wanted to make the lamps in her headlights last longer.
With your bare hands?!?