Engineers have developed a way to print biometric sensors onto skin, like a non-permanent tattoo, without the use of heat.

In addition to being more comfortable and less intrusive than today's wearable devices, the technology -- described Monday in the journal ACS Applied Materials and Interfaces -- can also collect more precise biometric measurements.


Here is the link:

Wearable tattoo: Scientists print sensors directly onto skin without heat
https://www.upi.com/Science_News/2020/10/12/Wearable-tattoo-Scientists-print-sensors-directly-onto-skin-without-heat/8371602507160/