It's the next level of sensing and accuracy," says Dr. Leslie Saxon, Executive Director of the USC Center for Body Computing. “We’re basically taking this new technology  and creating an unprecedented understanding and engagement for people around their health.

The heart-shaped patch is a wearable adhesive containing photosensitive dyes that change color when exposed to UV rays ... It was designed in partnership with MC10, a health tech firm based in Cambridge, Mass., that specializes in flexible electronics.

MC10 is dedicated to bringing stretchable electronics to market. The company worked with L’Oréal on My UV Patch and has developed another device, the BioStamp Research Connect, which measures body motion, muscle activity, and heart rate. MC10 began selling the BioStamp to researchers and companies earlier this year. “It’s essentially a body-worn computer,” says Roozbeh Ghaffari, MC10’s cofounder and chief technology officer.