Wearable sensor monitors health, administers drugs using saliva and tears Wearable sensors would be placed near the tear duct or mouth to collect biofluid samples, which would then produce data viewable on a user’s smartphone or sent to their doctor, according to Penn State researchers. Image: iStock/@aywan88/in-future Wearable sensor monitors health, administers drugs using saliva and tears Mariah Chuprinski February 01, 2021 UNIVERSITY PARK, Pa. — A new kind of wearable health device would deliver real-time medical data to those with eye or mouth diseases, according to Huanyu “Larry” Cheng, Dorothy Quiggle Career Development Professor in the Penn State Department of Engineering Science and Mechanics (ESM).