Recall your first cell phone or the oldest cell phone you have seen. Then reflect on the most up-to-date phone you have seen. What features do you notice on the new phone? These features can be called functionalities. Now, describe health care cost and quality information you have seen. Has it been helpful? What functionalities would add additional value to your use of your personal health data? What functionalities do you use in clinical practice? What aspects are useful and which would benefit from enhancement?