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取消以联系方式作为验证手段的想法——安全性不足,只会增添不必要的麻烦
取消以手机号作为联系方式——根本联系不到
改回纯取件码验证
- 对于自动生成的取件码,它自身足够安全
- 对于手动提交的取件码,安全性取决于提交者——如果提交者不提交安全的取件码,我们没有理由帮他们做清理