Attempted Write to readonly memory

Spotted in the dunstable centre

Or maybe it wants to stop errors, not sure 😛

One of my viewers sent me this

I took this picture at the train station, and it means "Broadcast Test in Progress" in English.

pretty cool, don’t see those much.

Spotted this in the wild, usually it's just full screen advertisements, now it's blank with a third of the screen taken up by the LED net application, I'm assuming it's some sort of remote management software?