Our smart meters in GA have a little green/red light. On a separate note i recall several years ago our water and electricity bills seemed a bit higher than usual, we never used to turns mains off but just unplugged everything, i discreetly took metre readings on leaving and again on arrival and saw units used, though never proven but indicators showed that our neighbours were using an extension onto the roof and plugging it into my socket. Another neighbour looks after next doors, garden and kindly uses the water to do there own as well and top the pool up, whilst the cats away !