There are several thousand in london already, embedded in lampposts so you might have missed them. Here's one within 100 meters of my very run of the mill flat

There are several thousand in london already, embedded in lampposts so you might have missed them. Here's one within 100 meters of my very run of the mill flat https://www.google.com/maps/@51.4689844,-0.1013741,3a,30.1y,140.88h,73.04t/data=!3m6!1e1!3m4!1soVyGD79IvrlsINsbfS9HUg!2e0!7i16384!8i8192 https://www.google.com/maps/@51.4689844,-0.1013741,3a,30.1y,...