从数据安全角度考虑，本系统对各个销售点都设置了登录界面以实现身份验证。
Considered from the data security Angle, this system establishes log-in boundary plane for each sale to realize the identification.
从数据安全角度考虑，本系统对各个销售点都设置了登录界面以实现身份验证。
Considered from the data security Angle, this system establishes log-in boundary plane for each sale to realize the identification.
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