So a system needs to find as many elements to measure as possible to reduce the first possibility -- letting an impostor through by mistaking that person for a legitimate user -- while also ensuring those elements are as unique as possible to prevent the
So a system needs to find as many elements to measure as possible to reduce the first possibility -- letting an impostor through by mistaking that person for a legitimate user -- while also ensuring those elements are as unique as possible to prevent the
因此，这个系统需要找到尽可能多的对比点以降低第一种情况发生的几率－－将冒名顶替者错认为是合法使用者而使他顺利通过，同时还得保证这些对比点尽可能独特，以减少后一种情况出现的几率－－将合法使用者误解为冒名顶替者。