I have faced such a number of times that the key is locked in the lock. To open the lock, many keys were broken. Because of which many problems have to be faced.

But you have presented a tapplock light portable lock that is excellent. Actually it is capable of working very fast, it takes only 0.8 seconds to open or apply. The biggest advantage is that the keys here are not needed, can handle finger prints.
SMART HUNT Thanks @faraz33