what are electronic tattoos?what are their Purpose?

well don’t get the wrong idea they are not only for Aesthetic purpose only they Serves a much greater purpose.

the scientist from China had invented tattos which were called skin-like electronic tattoos which can be applied on skin and aldo be customised according to the taste of the person who would apply it .it was invented to mesure health parameters such as blood presure It could also be attached to masks and throats to measure body signals such as breathing, heartbeat and voice, according to the research published in the journal ACS Nano.
so what kind of tattoos were they ?
well they are more like temporary tattoos which you would remember applying on childhood days
they feel like rubber but made out of highly resistant material called graphyne they are sweat resistant and high temprature resistant too.well as it states the e-tattoos have big potential in the field of medical industry and so as on tech industry.well it could come to cloths as its more practical than a tattoo.

so,comment below what you think of these e-tattoos