This looks like more work than just picking up the poop. You have to get the harness on the dog - magnet up the bag, attached it to the dog.. watch the dog reluctantly poo into the baggie attached to his rear.. than remove the bag, take the magnet off and reattach it to the contraption- throw out the poop bag. Geez.
That thing looks uncomfortable. Ella doesn't care for her regular harness, let alone one that wraps around her whole body. I'm sure Ella would try to eat the plastic bags off the back, and never look me in the eye again. I'd rather just scoop it off the ground, then try to reach under the back end of the dog and unhook a bag. I bet some dog would just wait and go on the person's hand when they went to unhook it.