From rfidjournal.com
The technology, developed at Penn State University, consists of a sensor array that can be applied to a substrate at low temperature and dissolve in warm water, along with an NFC or other wireless transmission module, to transmit data collected by sensors, such as temperature, heart rate or blood-oxygen levels.
Nov 27, 2020University researchers have developed a wearable sensor device that can be applied directly to an individual’s skin in order to measure his or her conditions, including temperature, heart rate and blood-oxygen levels. The device is designed to be applied directly to a person’s body like a temporary tattoo, and with a small wireless module leveraging Near Field Communication (NFC) RFID technology or inductive coupling, it can transmit data to a user’s smartphone.