Better than telemetry.... They can sit in their car and watch where it is on their phone.An experienced falcon will soon learn that it needs to be waiting on at a good height and precisely positioned to have a chance at a pigeon and if the falconer knows his stuff he will have easier quarry (game) located for his falcon to fly. They soon learn the difference.
I thought modern falconers had aviary bred hawks and telemetry (not to mention GPS) these days? Must be hard work losing them! When I started, it was all wild taken birds and a pair of brass bells from Muhammed Dhin in Lahore, Pakistan!
What happened to good old field craft aye?