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Every day we need lifts, when on one floor many people inside want to get out, someone might get stuck if those in front of him do not get out quickly, meanwhile those outside waiting for this lifting become nervous because they can not figure out when the door will slide close. Our design ,Countdown-close system, with a small screen showing time left for door to close, automatically reminds passengers both outside and inside of closing time so to avoid trappings and encourage more efficiency.
Dou Tian,Jiahui Huang,Ranyi Huang,Xin Min.