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Edit your writing in the APP, write on the door by your finger while unlocking and open the door after being verified. This user experience is novel, interesting and of high security.The protruding part is for turning and rotatable writing testing module facilitates people of different heights and ages. Rubber cover on the handle could also improve the sense of holding. During the process, only special knocks at the door is needed. After being detected by the sound sensor, the lock will be activated. Then write on the door with preset writing by your finger and turn the handle to open the door after being verified.
Xi 'an, China