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i-Doorknob / Doorknob


It is well acknowledged that child often get injured at home, especially when they are alone. For example, in most terrible but common case, their finger might be clipped by the door. In some severe cases, they possibly get disabled.
I-Doorknob, a smart doorknob. By using i-Doorknob, door can only be opened or closed when the handle is rotated to the marked location. Otherwise, the hinge will just remain still. Therefore, physical injury can be better avoided to any child caused by his/her inadvertently closing the door.


Tsinghua University

Tsinghua University
Beijing, China

Ziran Zhao,
Tsinghua University

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