In this paper, we introduced a new type of electronic password shared lock. It can be opened by any No.t member of the total‘n’ members with their private password. In particular, each member can change password conveniently. It also can increase or decrease number of users. The automatic alarm will be activated if wrong password has been input 3 times.%本文提出一款新型的能实现n个拥有私有密码的成员中的任意t个成员才能打开的电子密码共享锁，尤其，每个成员都可以随意更改自己的密码、任意t个成员都可以方便增减成员、同时该电子密码锁具备每个成员如果输入密码错误超过三次有自动报警等功能。
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