> I was thinking they could just switch from 0-9 to 0-9A-Z but that photo showed why that would be a disaster.
I guarantee those signs could easily be updated for that. They’re built to allow replacement of each cell and routinely do so since cells break. Switching to 0-9A-Z would take one night for them.
To change the physical tabs, sure. What about whatever drives the tab-switching? Wouldn't surprise me if it's a 1980s solid-state something-or-other with a baked-in 0-9 constraint.
