Screencap of Battle Buddy mobile app. (IMAGE) University of Southern California Caption Battle Buddy's AI-driven virtual human companion uses passive sensing through a phone or other wearables such as a smartwatch to deliver personalized health, wellness and suicide prevention messaging. Credit USC Institute for Creative Technologies. Usage Restrictions Photo/USC Institute for Creative Technologies License Original 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.