The disclosed computer-implemented method for controlling access may include (i) installing on a personal mobile device a mobile device application that enforces an authorization security policy for protected premises, (ii) checking, by the mobile device application and in response to installing the mobile device application, whether the personal mobile device satisfies a condition of the authorization security policy, (iii) granting authorization for the personal mobile device to function as an access card based on a result of checking whether the personal mobile device satisfies the condition of the authorization security policy, and (iv) enforcing an additional access security policy on the personal mobile device after granting authorization for the personal mobile device to function as the access card. Various other methods, systems, and computer-readable media are also disclosed.