但编程方式的安全增强则更有意思一些，login、logout这些方法能让开发人员更好地控制认证和授权过程。

But the more interesting thing is the programmatic security enhancements including the login and logout methods which give the developer more control over the authentication and authorization process.

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员工，访客和供应商识别卡的发放和回收是由保安或者相关授权人员统一控制的吗？

Is the issuance and removal of employee, visitor and vendor identification badges adequately controlled by security or authorized persons?

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它符合目前多变的企业人员结构和组织结构，结合细粒度的权限划分和充分的授权约束，进一步对传统RBAC做出了扩展，满足动态访问控制的要求。

Its fits the dynamic employee and organization structure. The model extends the traditional RBAC by incorporating thin granular permissions control and enough Constrains in authorization.

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