The era of "e": the use of new technologies in advance care planning.

In this article, the authors review developments in technology that can help patients, their loved ones, and healthcare providers engage in more effective advance care planning (ACP). The article begins with a brief description of ACP and its purpose and then discusses various electronically available resources for ACP in the U.S. Finally the authors provide a critical assessment of the achievements, challenges, and future prospects for electronic advance care planning, or "e-planning."