I think the major obstacle and delay     for eDIG  re health care was HIPAA regulation.I believe we are very close for announcement of delivery to health care industry.

The Administrative Simplification provisions of the Health Insurance Portability and Accountability Act of 1996 (HIPAA, Title II) required the Department of Health and Human Services (HHS) to establish national standards for electronic health care transactions and national identifiers for providers, health plans, and employers. It also addressed the security and privacy of health data. As the industry adopts these standards for the efficiency and effectiveness of the nation's health care system will improve the use of electronic data interchange