C672 Longevity Lock

It was strange. Would anyone use a long rope if they were happy? In fact, if it was in real life, it would be very easy to find if someone used a long rope, because after all it is a modern city, so why would anyone use a Life Lock? If it was in reality, if someone used a long rope, it should be very easy to find, because after all, it is a modern city, so how could anyone use a Life Lock