Tattoos from “smart ink” will show the state of a person, changing their color
The Anglo-American team of researchers promotes the concept of controlling biomarkers (biometrics) of the human body using systems that do not require energy consumption. This is the bottleneck of all external and implantable devices – they need a power source, if not to measure the same level of glucose, then at least to transfer data to the monitor. It is cumbersome, uncomfortable, not cheap.
The new project “Dermal Abyss” is dedicated to the development of biosensitive substances that function in close contact with blood plasma. It looks like a subcutaneous pattern, similar to a tattoo, through which part of the intracellular fluid flows. In this case, a constant chemical reaction occurs, because of which the color of the pattern changes depending on the concentration of specific substances in the body. No expenditure of energy – as long as the body lives, the tattoo “pulsates” in time with its rhythms.
In the initial experiments on the mumps involved two prototypes of “smart ink”. The first reacts to the level of glucose and becomes darker than it is higher. The second serves as a marker of the sodium level to prevent dehydration and, conversely, increases the brightness as the concentration of this element increases in the blood. This is a problem from the problems – the human eye can not recognize the shades of the pattern and, in order not to be confused, it is necessary to scan the biosensor using a smartphone and decrypt it in a special application.
The idea of recognizing a person’s state only by the color of his tattoo, unexpectedly came across an ethical problem – not all people interviewed agreed to just show information about their health to others so simply. It will be necessary to refine the ink, for example, to show up only with the light of a special medical flashlight. Plus, there is the question of the durability of the patterns , which are relatively quickly destroyed because of the continuous chemical reactions within the human body.