The transit stop use case really does seem to be ramping up, including the Massachusetts Bay Transit Authority currently adding them to most surface Green Line stops: https://www.mbta.com/projects/solar-powered-e-ink-signs

Transit was one of the two core practical applications the Visionect founder mentioned in Nov 2020: https://news.ycombinator.com/item?id=25067359

Interesting. Now I'm curious about the tech used behind it to transmit the info accross the network. I'm wondering if a LoRa/LoRaWAN-based mesh network could do the trick to avoid using some kind of cell data or wired infrastructure, but also be energy-efficient enough to work using only solar power.

Aren't all e-ink displays highly visible in direct sunlight? You need exterior to even use them in the first place

I meant compared to traditional displays.

E-Ink is a ton more visible in direct sunlight compared to traditional displays?

Quite a bit more.

https://i.imgur.com/Z36BcCn.jpg

> One can dream..

Of faster than light travel? :-) They're limited by the physics of electrophoresis.

I mean there's other ways than refresh rate where there can be improvement, especially on color eInk displays. They managed to increase the DPI on this version after all :)