Covert Body Area Network (IMAGE) Purdue University Caption A device keeps communication signals within the body, so that no one can hack into medical equipment such as pacemakers. Credit Purdue University image/Debayan Das Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.