Inspired on Benchmark 1 & 2
The leash is already integrated in the harness or collar that the dog wears.
The only problem is: the dog can't reach the leash to give it to his boss.
So we created a flap or loop attached at the end of the leash, that is guided along the dogs' back to a place where he can reach the the loop and hand it over to his boss (or attach it to his weelchair).
The mechanism for pulling out the rope (including a spring) is fixed in the middle op the neck of the dog, so it wouldn't bother him.
We will ask Caroline what the best location is for the loop, so the dog can reach it.