Faithful Umbrella / umbrella with anti-loss functi

Have you ever lost your umbrella which you put on a public umbrella rack? In order to prevent your umbrella from loss, the handle is designed as a key and the rod is designed as a lock. When the umbrella is closed, the key could lock the rod and separates from the umbrella to keep the trigger part stuck and let the umbrella keep closed. A stuck umbrella could keep itself safe in public space since it can’t be used as a general umbrella. Besides, the separated handle could be used as a shopping bags hook. Once the key handle matches the lock rod, the trigger part is unlocked. The umbrella opens again and covers its owner in a rainy day.