Trustworthy proactive delegation does not just meet the patient's wishes it creates a more effective and efficient system for sharing data in matters of public health and research.  That is, if proactive delegation creates a legal mandate  on custodians to share data, then it removes the need to negotiate data-sharing agreements between the data custodian (the company or public entities that either hold or make applications that hold patient data) and third parties.  Custodians often hold data hostage in the name of liability and risk causing immense delays in data sharing.