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It is very difficult to find the right key from bags in the dark. And finding the keyhole successfully is more difficult. Key Light has a set of matching locks and keys. When the key come to the lock, the key and the keyhole will light up. With these light sources, one can easily solve those mentioned problems. Whats more, when going home at night, the light on door will gives people emotional comfort.
Zhejiang sci-tech university
HongFan Zhou,Penghao Shan,Shujiao Xu,Min Zhang,Sali Miao,XinYing Wang,Yue Zhao,Bo Wei