162 | 162 | A key feature of the policy is that it must scale to distributed environments in which health record information is maintained at multiple provider sites visited by the patient. As Anderson points out in the BMA study, policy elements are also needed for guarding against users gaining access to massive numbers of EHRs, and inferencing attacks. Currently these are outside the scope of openEHR, and realistically, of most EHR implementations of any kind today. The following sections describe how openEHR supports the first list of policy objectives. |