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Do you hate carring a lot of keys? When you open a lock,do you have difficulties picking out the right key? The concept Rotate may help you.It is a new type of key especially designed for people who usually use 2 keys together.It combines 2 keys into 1 key through a rotation axis so that the user can carry one key but open 2 locks.For example,a young man who shared a multi-bedroom flat with his friends can use Rotate to open the entrance door firstly then the door of his own room.With Rotate,you will not have to carry so many keys and finding the right key will be much easier.
Wuhan University of Technology
Wuhan University Of Technology
Gang Liu,Jingdong Liu,Jin Qiu,Yin Niu