OK, so it didn't quite round out our Japanese news this week... Finally, e-ink technology (using high-contrast black-and-white balls suspended between two sheets of plastic) rather than LCD technology has made it to commercial deployment in electronic shelf labels (ESLs) in Japan. Why is this news? Power consumption for one thing. A similar tag I was given by e-ink (different company) ran for two years on two AA batteries... Not bad for a constantly changing display visible from across the room.


